All answers must use the correct number of significant figures, and must show units!

Size: px
Start display at page:

Download "All answers must use the correct number of significant figures, and must show units!"

Transcription

1 CHEM 10113, Quiz 2 September 7, 2011 Name (please print) All answers must use the correct number of significant figures, and must show units! IA Periodic Table of the Elements VIIIA (1) (18) H IIA IIIA IVA VA VIA VIIA He (2) (13) (14) (15) (16) (17) Li Be B C N O F Ne Na Mg IIIB IVB VB VIB VIIB VIIIB IB IIB Al Si P S Cl Ar (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn Fr Ra Ac Rf Db Sg Bh Hs Mt Ds Uuu Uub Uug (261) (262) (266) (264) (270) (268) (281) Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr (3 points) Give ONE example of each of the following: a halogen _fluorine, chlorine, bromine, iodine, or astatine an element in the same group as tungsten molybdenum, chromium, or seaborgium a metalloid boron, silicon, germanium, arsenic, antimony, tellurium, polonium an element that exists in nature as a diatomic molecule_oxygen or many other options an element that readily forms a 2+ cation Mg, Be, Ca, Sr, Ba, or Ra part of an atom found inside the nucleus proton or neutron 2. (5 points) Consulting the periodic table if needed (above), fill in the blanks to complete the table. Chemical Z A Number of Number of Number of Charge symbol p e- n

2 3. (5 points) a) How many atoms of each element are represented in the following formula of tetrabutylammonium nitrate? (CH 3 CH 3 CH 3 CH 2 ) 4 N(NO 3 ) 16 carbons, 44 hydrogens, 2 nitrogens, 3 oxygens b) How many atoms of each element can be found in the products side of the following equation? Is the equation balanced? C 10 H 8(s) + 9 MnO 2(s) + H 2 SO 4(aq) C 8 H 6 O 4(s) + 2 CO 2(g) + MnSO 4(aq) + H 2 O (l) 10 carbons, 8 hydrogens, 13 oxygens, 1 manganese, one sulfur, not balanced 4. (4 points) SHOW ALL WORK. Chlorine s mass in the periodic table is given as amu. It has two isotopes, A and B. Fill in the missing information about isotope B. Isotope Isotopic Abundance Isotopic Mass A 75.77% amu B 24.23% amu = = (0.7577)( ) + (0.2423)x x = ( )/ = (1 point) If a 10 g sample of element X contains twice as many atoms as a 10 g sample of element Y, how does the atomic mass of X (mass X ) compare with the atomic mass of Y (mass Y )? mass X = ½(mass Y ) 6. (1 point) How many moles of sulfur are there in 3.92 moles of Ca(S 2 O 3 ) 2? 4(3.92) = 15.7 mol 7. (6 points) Upon hearing how many students would be in this class, Dr. Hanna began to hyperventilate. In 2 minutes she took 75 breaths of air. Given that each breath was 0.50 L, and that air contains 0.28 g of oxygen per liter, how many atoms of oxygen did Dr. Hanna inhale in those 2 minutes? 75 breaths x (0.50 L air)/(1 breath) x (0.28 g O)/(1 L air) x (1 mol O atoms)/( g O) x (6.022 x O atoms)/(1 mol O atoms) = 4.0 x O atoms 2

3 CHEM 10113, Quiz 2 September 7, 2011 Name (please print) All answers must use the correct number of significant figures, and must show units! IA Periodic Table of the Elements VIIIA (1) (18) H IIA IIIA IVA VA VIA VIIA He (2) (13) (14) (15) (16) (17) Li Be B C N O F Ne Na Mg IIIB IVB VB VIB VIIB VIIIB IB IIB Al Si P S Cl Ar (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn Fr Ra Ac Rf Db Sg Bh Hs Mt Ds Uuu Uub Uug (261) (262) (266) (264) (270) (268) (281) Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr (3 points) Give ONE example of each of the following: a noble gas helium, neon, argon, krypton, xenon, or radon an element in the same group as platinum palladium or nickel or darmstadtium a metal iron, or lots of other examples an element that exists in nature as a diatomic molecule oxygen, or many other examples an element that readily forms a 1+ cation H, Li, Na, K, Rb, Cs, or Fr part of an atom found outside the nucleus electron 2. (5 points) Consulting the periodic table if needed (above), fill in the blanks to complete the table. Chemical Z A Number of Number of Number of Charge symbol p e- n

4 3. (5 points) How many atoms of each element are represented in the following formula of sodium oleate? CH 3 (CH 2 ) 7 CHCH(CH 2 ) 7 COONa 18 carbons, 33 hydrogens, 2 oxygens, 1 sodium How many atoms of each element can be found in the products side of the following equation? Is the equation balanced? FeTiO 3(s) + 3 Cl 2(g) + 3 C (s) 3 CO (g) + FeCl 2(s) + TiCl 4(g) 3 carbons, 3 oxygens, 1 iron, 6 chlorines, 1 titanium, yes, balanced 4. (4 points) SHOW ALL WORK. Antimony s mass in the periodic table is given as amu. It has two isotopes, A and B. Fill in the missing information about isotope A. Isotope Isotopic Abundance Isotopic Mass A 57.30% amu B 42.70% amu = 57.30% = (0.4270)( ) + (0.5730)x x = ( )/(0.5730) = amu 5. (1 point) If a 20 g sample of element X contains twice as many atoms as a 20 g sample of element Y, how does the atomic mass of X (mass X ) compare with the atomic mass of Y (mass Y )? mass X = ½(mass Y ) 6. (1 point) How many moles of nitrogen are there in 4.63 moles of Mg(NO 3 ) 2? 2(4.63) = 9.26 mol 7. (6 points) Upon hearing how many students would be in this class, Dr. Hanna began to hyperventilate. In 2 minutes she took 102 breaths of air. Given that each breath was 0.50 L, and that air contains 0.28 g of oxygen per liter, how many atoms of oxygen did Dr. Hanna inhale in those 2 minutes? 102 breaths x (0.50 L)/(1 breath) x (0.28 g O)/(1 L air) x (1 mol O)/( g O) x x atoms O)/(1 mol O) = 5.4 x atoms 4

5 CHEM 10113, Quiz 2 September 7, 2011 Name (please print) All answers must use the correct number of significant figures, and must show units! IA Periodic Table of the Elements VIIIA (1) (18) H IIA IIIA IVA VA VIA VIIA He (2) (13) (14) (15) (16) (17) Li Be B C N O F Ne Na Mg IIIB IVB VB VIB VIIB VIIIB IB IIB Al Si P S Cl Ar (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn Fr Ra Ac Rf Db Sg Bh Hs Mt Ds Uuu Uub Uug (261) (262) (266) (264) (270) (268) (281) Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr (3 points) Give ONE example of each of the following: an alkali metal Li, Na, K, Rb, Cs, or Fr an element in the same group as tellurium O, S, Se, or Po a nonmetal oxygen or many other examples an element that exists in nature as a diatomic molecule oxgyen or many other examples an element that readily forms a 2- anion O, S, Se, Te, or Po the heaviest part of an atom nucleus 2. (5 points) Consulting the periodic table if needed (above), fill in the blanks to complete the table. Chemical Z A Number of Number of Number of Charge symbol p e- n

6 3. (5 points) a) How many atoms of each element are represented in the following formula of heptamethyldisilazane? (CH 3 ) 3 SiN(CH 3 )Si(CH 3 ) 3 7 carbons, 21 hydrogens, 2 silicons, 1 nitrogen b) How many atoms of each element can be found in the products side of the following equation? Is the equation balanced? C 10 H 8(s) + 6 CrO 3(s) + H 2 SO 4(aq) C 8 H 6 O 4(s) + 2 CO 2(g) + 3 Cr 2 (SO 4 ) 3(aq) + H 2 O (l) 10 carbons, 8 hydrogens, 45 oxygens, 6 chromiums, 9 sulfurs, no, not balanced 4. (4 points) SHOW ALL WORK. Boron s mass in the periodic table is given as amu. It has two isotopes, A and B. Fill in the missing information about isotope A. Isotope Isotopic Abundance Isotopic Mass A 19.80% amu B 80.20% amu = = (0.8020)( ) + (0.1980)x x = ( )/(0.1980) = ( )/(0.1980) = amu 5. (1 point) If a 5 g sample of element X contains twice as many atoms as a 5 g sample of element Y, how does the atomic mass of X (mass X ) compare with the atomic mass of Y (mass Y )? mass X = ½(mass Y ) 6. (1 point) How many moles of nitrogen are there in 5.43 moles of Ca(NO 3 ) 2? 2(5.43) = mol 7. (6 points) Upon hearing how many students would be in this class, Dr. Hanna began to hyperventilate. In 2 minutes she took 86 breaths of air. Given that each breath was 0.50 L, and that air contains 0.28 g of oxygen per liter, how many atoms of oxygen did Dr. Hanna inhale in those 2 minutes? 86 breaths x (0.50 L)/(1 breath) x (0.28 g O)/(1 L air) x (1 mol O)/( g O) x (6.022 x atoms O)/(1 mol O) = 4.5 x atoms O 6

B I N G O B I N G O. Hf Cd Na Nb Lr. I Fl Fr Mo Si. Ho Bi Ce Eu Ac. Md Co P Pa Tc. Uut Rh K N. Sb At Md H. Bh Cm H Bi Es. Mo Uus Lu P F.

B I N G O B I N G O. Hf Cd Na Nb Lr. I Fl Fr Mo Si. Ho Bi Ce Eu Ac. Md Co P Pa Tc. Uut Rh K N. Sb At Md H. Bh Cm H Bi Es. Mo Uus Lu P F. Hf Cd Na Nb Lr Ho Bi Ce u Ac I Fl Fr Mo i Md Co P Pa Tc Uut Rh K N Dy Cl N Am b At Md H Y Bh Cm H Bi s Mo Uus Lu P F Cu Ar Ag Mg K Thomas Jefferson National Accelerator Facility - Office of cience ducation

More information

From Quantum to Matter 2006

From Quantum to Matter 2006 From Quantum to Matter 006 Why such a course? Ronald Griessen Vrije Universiteit, Amsterdam AMOLF, May 4, 004 vrije Universiteit amsterdam Why study quantum mechanics? From Quantum to Matter: The main

More information

It takes four quantum numbers to describe an electron. Additionally, every electron has a unique set of quantum numbers.

It takes four quantum numbers to describe an electron. Additionally, every electron has a unique set of quantum numbers. So, quantum mechanics does not define the path that the electron follows; rather, quantum mechanics works by determining the energy of the electron. Once the energy of an electron is known, the probability

More information

Role of Hydrogen Bonding on Protein Secondary Structure Introduction

Role of Hydrogen Bonding on Protein Secondary Structure Introduction Role of Hydrogen Bonding on Protein Secondary Structure Introduction The function and chemical properties of proteins are determined by its three-dimensional structure. The final architecture of the protein

More information

ORTEC DET-SW-UPG. Latest Software Features. Ease of Use. Source Location with the Detective V3 Software

ORTEC DET-SW-UPG. Latest Software Features. Ease of Use. Source Location with the Detective V3 Software ORTEC DET-SW-UPG Latest Software Features Three Search Modes: Gamma/Neutron total count rate. SNM search mode. Sliding average "monitor" mode. (NEW) User choice of identification schemes: Classify mode

More information

Chapter 3 Mass Relationships in Chemical Reactions

Chapter 3 Mass Relationships in Chemical Reactions Chapter 3 Mass Relationships in Chemical Reactions Student: 1. An atom of bromine has a mass about four times greater than that of an atom of neon. Which choice makes the correct comparison of the relative

More information

The Mole. Chapter 2. Solutions for Practice Problems

The Mole. Chapter 2. Solutions for Practice Problems Chapter 2 The Mole Note to teacher: You will notice that there are two different formats for the Sample Problems in the student textbook. Where appropriate, the Sample Problem contains the full set of

More information

Standard Operation Procedure. Elemental Analysis of Solution samples with Inductively Coupled Plasma Mass Spectrometry

Standard Operation Procedure. Elemental Analysis of Solution samples with Inductively Coupled Plasma Mass Spectrometry Standard Operation Procedure Elemental Analysis of Solution samples with Inductively Coupled Plasma Mass Spectrometry Soil & Plant Analysis Laboratory University of Wisconsin Madison http://uwlab.soils.wisc.edu

More information

Test Review Periodic Trends and The Mole

Test Review Periodic Trends and The Mole Test Review Periodic Trends and The Mole The Mole SHOW ALL WORK ON YOUR OWN PAPER FOR CREDIT!! 1 2 (NH42SO2 %N 24.1 %H 6.9 %S 27.6 %O 41.3 % Al %C 35.3 %H 4.4 %O 47.1 Al(C2H3O23 13.2 3 How many moles are

More information

Periodic Table Bingo

Periodic Table Bingo Periodic Table Bingo Materials: Periodic Table Bingo Card Periodic Table of Elements Colored pieces of paper or plastic discs Instructions: Print the Periodic Table Bingo Cards (pages 5-44). There are

More information

Study Guide For Chapter 7

Study Guide For Chapter 7 Name: Class: Date: ID: A Study Guide For Chapter 7 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. The number of atoms in a mole of any pure substance

More information

ATOMS. Multiple Choice Questions

ATOMS. Multiple Choice Questions Chapter 3 ATOMS AND MOLECULES Multiple Choice Questions 1. Which of the following correctly represents 360 g of water? (i) 2 moles of H 2 0 (ii) 20 moles of water (iii) 6.022 10 23 molecules of water (iv)

More information

WASTE STREAM 2Y51 Analytical Services Process Facilities - North Labs

WASTE STREAM 2Y51 Analytical Services Process Facilities - North Labs WASTE STREAM 2Y51 Analytical Services Process Facilities North Labs SITE SITE OWNER WASTE CUSTODIAN WASTE TYPE Sellafield Nuclear Decommissioning Authority Sellafield Limited LLW WASTE VOLUMES Stocks:

More information

Woods Chem-1 Lec-02 10-1 Atoms, Ions, Mole (std) Page 1 ATOMIC THEORY, MOLECULES, & IONS

Woods Chem-1 Lec-02 10-1 Atoms, Ions, Mole (std) Page 1 ATOMIC THEORY, MOLECULES, & IONS Woods Chem-1 Lec-02 10-1 Atoms, Ions, Mole (std) Page 1 ATOMIC THEORY, MOLECULES, & IONS Proton: A positively charged particle in the nucleus Atomic Number: We differentiate all elements by their number

More information

Candidate Style Answer

Candidate Style Answer Candidate Style Answer Chemistry A Unit F321 Atoms, Bonds and Groups High banded response This Support Material booklet is designed to accompany the OCR GCE Chemistry A Specimen Paper F321 for teaching

More information

Moles, Molecules, and Grams Worksheet Answer Key

Moles, Molecules, and Grams Worksheet Answer Key Moles, Molecules, and Grams Worksheet Answer Key 1) How many are there in 24 grams of FeF 3? 1.28 x 10 23 2) How many are there in 450 grams of Na 2 SO 4? 1.91 x 10 24 3) How many grams are there in 2.3

More information

W1 WORKSHOP ON STOICHIOMETRY

W1 WORKSHOP ON STOICHIOMETRY INTRODUCTION W1 WORKSHOP ON STOICHIOMETRY These notes and exercises are designed to introduce you to the basic concepts required to understand a chemical formula or equation. Relative atomic masses of

More information

X-RAY DATA BOOKLET Center for X-ray Optics and Advanced Light Source Lawrence Berkeley National Laboratory

X-RAY DATA BOOKLET Center for X-ray Optics and Advanced Light Source Lawrence Berkeley National Laboratory X-Ray Data Booklet X-RAY DATA BOOKLET Center for X-ray Optics and Advanced Light Source Lawrence Berkeley National Laboratory Introduction X-Ray Properties of Elements Now Available Order X-Ray Data Booklet

More information

Mole Calculations Multiple Choice Review PSI Chemistry

Mole Calculations Multiple Choice Review PSI Chemistry Mole Calculations Multiple Choice Review PSI Chemistry Name The Mole and Avogadro's Number 1)What is the SI unit for measurement of number of particles in a substance? A) kilogram B) ampere C) candela

More information

Chapter 1 The Atomic Nature of Matter

Chapter 1 The Atomic Nature of Matter Chapter 1 The Atomic Nature of Matter 6. Substances that cannot be decomposed into two or more simpler substances by chemical means are called a. pure substances. b. compounds. c. molecules. d. elements.

More information

Solution. Practice Exercise. Concept Exercise

Solution. Practice Exercise. Concept Exercise Example Exercise 9.1 Atomic Mass and Avogadro s Number Refer to the atomic masses in the periodic table inside the front cover of this textbook. State the mass of Avogadro s number of atoms for each of

More information

STOICHIOMETRY UNIT 1 LEARNING OUTCOMES. At the end of this unit students will be expected to:

STOICHIOMETRY UNIT 1 LEARNING OUTCOMES. At the end of this unit students will be expected to: STOICHIOMETRY LEARNING OUTCOMES At the end of this unit students will be expected to: UNIT 1 THE MOLE AND MOLAR MASS define molar mass and perform mole-mass inter-conversions for pure substances explain

More information

SCH 4C1 Unit 2 Problem Set Questions taken from Frank Mustoe et all, "Chemistry 11", McGraw-Hill Ryerson, 2001

SCH 4C1 Unit 2 Problem Set Questions taken from Frank Mustoe et all, Chemistry 11, McGraw-Hill Ryerson, 2001 SCH 4C1 Unit 2 Problem Set Questions taken from Frank Mustoe et all, "Chemistry 11", McGraw-Hill Ryerson, 2001 1. A small pin contains 0.0178 mol of iron. How many atoms of iron are in the pin? 2. A sample

More information

Chapter 1: Moles and equations. Learning outcomes. you should be able to:

Chapter 1: Moles and equations. Learning outcomes. you should be able to: Chapter 1: Moles and equations 1 Learning outcomes you should be able to: define and use the terms: relative atomic mass, isotopic mass and formula mass based on the 12 C scale perform calculations, including

More information

WASTE STREAM 2F35 Excellox-Type Transport Flasks and French-Design Dry Flasks

WASTE STREAM 2F35 Excellox-Type Transport Flasks and French-Design Dry Flasks SITE SITE OWR WASTE CUSTODIAN WASTE TYPE Sellafield Nuclear Decommissioning Authority Sellafield Limited LLW WASTE VOLUMES Stocks: At 1.4.2013... Future arisings - Total future arisings: 45.4 m³ Comment

More information

MOLES AND MOLE CALCULATIONS

MOLES AND MOLE CALCULATIONS 35 MOLES ND MOLE CLCULTIONS INTRODUCTION The purpose of this section is to present some methods for calculating both how much of each reactant is used in a chemical reaction, and how much of each product

More information

PART I: MULTIPLE CHOICE (30 multiple choice questions. Each multiple choice question is worth 2 points)

PART I: MULTIPLE CHOICE (30 multiple choice questions. Each multiple choice question is worth 2 points) CHEMISTRY 123-07 Midterm #1 Answer key October 14, 2010 Statistics: Average: 74 p (74%); Highest: 97 p (95%); Lowest: 33 p (33%) Number of students performing at or above average: 67 (57%) Number of students

More information

Chemical Composition Review Mole Calculations Percent Composition. Copyright Cengage Learning. All rights reserved. 8 1

Chemical Composition Review Mole Calculations Percent Composition. Copyright Cengage Learning. All rights reserved. 8 1 Chemical Composition Review Mole Calculations Percent Composition Copyright Cengage Learning. All rights reserved. 8 1 QUESTION Suppose you work in a hardware store and a customer wants to purchase 500

More information

Sustainable energy products Simulation based design for recycling

Sustainable energy products Simulation based design for recycling Sustainable energy products Simulation based design for recycling Markus A. Reuter (Prof. Dr. Dr. hc) Director: Technology Management, Outotec Oyj Aalto University (Finland), Central South University (China),

More information

Web Typography Sucks

Web Typography Sucks Web Typography Sucks Richard Rutter Mark Boulton RR: We re here to talk about web typography sucks - how it does, why it needn t, when it doesn t and how we can all do something about it. Let s talk about

More information

Answers and Solutions to Text Problems

Answers and Solutions to Text Problems Chapter 7 Answers and Solutions 7 Answers and Solutions to Text Problems 7.1 A mole is the amount of a substance that contains 6.02 x 10 23 items. For example, one mole of water contains 6.02 10 23 molecules

More information

Module Two Atoms, Molecules and Moles. Chem 170. Stoichiometric Calculations. Module Two. Atoms, Molecules and Moles

Module Two Atoms, Molecules and Moles. Chem 170. Stoichiometric Calculations. Module Two. Atoms, Molecules and Moles Chem 170 Stoichiometric Calculations Module Two Atoms, Molecules and Moles DePauw University Department of Chemistry and Biochemistry Page 1 Introduction to Module Two In the early fifth century BC, the

More information

Towards a Circular Economy rethinking value chains to boost resource productivity

Towards a Circular Economy rethinking value chains to boost resource productivity Towards a Circular Economy rethinking value chains to boost resource productivity Dr. Markus Zils Returnity Partners Brussels Environment, 29 th Mai 2015 Contents The resource revolution Circular economy

More information

602X10 21 602,000,000,000, 000,000,000,000 6.02X10 23. Pre- AP Chemistry Chemical Quan44es: The Mole. Diatomic Elements

602X10 21 602,000,000,000, 000,000,000,000 6.02X10 23. Pre- AP Chemistry Chemical Quan44es: The Mole. Diatomic Elements Pre- AP Chemistry Chemical Quan44es: The Mole Mole SI unit of measurement that measures the amount of substance. A substance exists as representa9ve par9cles. Representa9ve par9cles can be atoms, molecules,

More information

Molecules, Atoms, Grams and Mole Calculation Practice

Molecules, Atoms, Grams and Mole Calculation Practice Molecules, Atoms, Grams and Mole Calculation Practice Helpful HINTS: In these problems look for two things: 1) From what unit to what unit? 2) Does the object stay the same, or does the object change?

More information

1.- L a m e j o r o p c ió n e s c l o na r e l d i s co ( s e e x p li c a r á d es p u é s ).

1.- L a m e j o r o p c ió n e s c l o na r e l d i s co ( s e e x p li c a r á d es p u é s ). PROCEDIMIENTO DE RECUPERACION Y COPIAS DE SEGURIDAD DEL CORTAFUEGOS LINUX P ar a p od e r re c u p e ra r nu e s t r o c o rt a f u e go s an t e un d es a s t r e ( r ot u r a d e l di s c o o d e l a

More information

Matter. Atomic weight, Molecular weight and Mole

Matter. Atomic weight, Molecular weight and Mole Matter Atomic weight, Molecular weight and Mole Atomic Mass Unit Chemists of the nineteenth century realized that, in order to measure the mass of an atomic particle, it was useless to use the standard

More information

High-tech recycling of critical metals: Opportunities and challenges

High-tech recycling of critical metals: Opportunities and challenges High-tech recycling of critical metals: Opportunities and challenges Application know-how Metals Chemistry material Material science solutions Metallurgy Material solutions Recycling Christina Meskers

More information

10 Cl atoms. 10 H2O molecules. 8.3 mol HCN = 8.3 mol N atoms 1 mol HCN. 2 mol H atoms 2.63 mol CH2O = 5.26 mol H atoms 1 mol CH O

10 Cl atoms. 10 H2O molecules. 8.3 mol HCN = 8.3 mol N atoms 1 mol HCN. 2 mol H atoms 2.63 mol CH2O = 5.26 mol H atoms 1 mol CH O Chem 100 Mole conversions and stoichiometry worksheet 1. How many Ag atoms are in.4 mol Ag atoms? 6.0 10 Ag atoms 4.4 mol Ag atoms = 1.46 10 Ag atoms 1 mol Ag atoms. How many Br molecules are in 18. mol

More information

SUS. Company Profile. Ulrich Nell, Feldstr.23, D - 46149 Oberhausen, Tel. 0049(0)208/658535 Fax 0049(0)208/658536

SUS. Company Profile. Ulrich Nell, Feldstr.23, D - 46149 Oberhausen, Tel. 0049(0)208/658535 Fax 0049(0)208/658536 SUS Ulrich Nell, Feldstr.23, D - 46149 Oberhausen, Tel. 0049(0208/658535 Fax 0049(0208/658536 Company Profile SUS was founded in 1986 in Oberhausen in the Ruhr area (close to Düsseldorf, in order to meet

More information

The Mole. Chapter 10. Dimensional Analysis. The Mole. How much mass is in one atom of carbon-12? Molar Mass of Atoms 3/1/2015

The Mole. Chapter 10. Dimensional Analysis. The Mole. How much mass is in one atom of carbon-12? Molar Mass of Atoms 3/1/2015 The Mole Chapter 10 1 Objectives Use the mole and molar mass to make conversions among moles, mass, and number of particles Determine the percent composition of the components of a compound Calculate empirical

More information

Calculations and Chemical Equations. Example: Hydrogen atomic weight = 1.008 amu Carbon atomic weight = 12.001 amu

Calculations and Chemical Equations. Example: Hydrogen atomic weight = 1.008 amu Carbon atomic weight = 12.001 amu Calculations and Chemical Equations Atomic mass: Mass of an atom of an element, expressed in atomic mass units Atomic mass unit (amu): 1.661 x 10-24 g Atomic weight: Average mass of all isotopes of a given

More information

Moles. Balanced chemical equations Molar ratios Mass Composition Empirical and Molecular Mass Predicting Quantities Equations

Moles. Balanced chemical equations Molar ratios Mass Composition Empirical and Molecular Mass Predicting Quantities Equations Moles Balanced chemical equations Molar ratios Mass Composition Empirical and Molecular Mass Predicting Quantities Equations Micro World atoms & molecules Macro World grams Atomic mass is the mass of an

More information

Amount of Substance. http://www.avogadro.co.uk/definitions/elemcompmix.htm

Amount of Substance. http://www.avogadro.co.uk/definitions/elemcompmix.htm Page 1 of 14 Amount of Substance Key terms in this chapter are: Element Compound Mixture Atom Molecule Ion Relative Atomic Mass Avogadro constant Mole Isotope Relative Isotopic Mass Relative Molecular

More information

CHEM 120 Online: Chapter 6 Sample problems Date: 2. Which of the following compounds has the largest formula mass? A) H2O B) NH3 C) CO D) BeH2

CHEM 120 Online: Chapter 6 Sample problems Date: 2. Which of the following compounds has the largest formula mass? A) H2O B) NH3 C) CO D) BeH2 CHEM 120 Online: Chapter 6 Sample problems Date: 1. To determine the formula mass of a compound you should A) add up the atomic masses of all the atoms present. B) add up the atomic masses of all the atoms

More information

Mole Notes.notebook. October 29, 2014

Mole Notes.notebook. October 29, 2014 1 2 How do chemists count atoms/formula units/molecules? How do we go from the atomic scale to the scale of everyday measurements (macroscopic scale)? The gateway is the mole! But before we get to the

More information

Chapter 2: Atoms and Molecules

Chapter 2: Atoms and Molecules hapter 2: Atoms and Molecules HAPTER OUTLINE 2.1 Symbols and Formulas 2.2 Inside the Atom 2. Isotopes 2.4 Relative Masses of Atoms and Molecules 2.5 Isotopes and Atomic Weights 2.6 Avogadro s Number: The

More information

Analyses on copper samples from Micans

Analyses on copper samples from Micans PDF rendering: DokumentID 1473479, Version 1., Status Godkänt, Sekretessklass Öppen Analyses on copper samples from Micans P. Berastegui, M. Hahlin, M. Ottosson, M. Korvela, Y. Andersson, R. Berger and

More information

Data Analysis and Validation Support for PM2.5 Chemical Speciation Networks- #82

Data Analysis and Validation Support for PM2.5 Chemical Speciation Networks- #82 Data Analysis and Validation Support for PM2.5 Chemical Speciation Networks- #82 Max R. Peterson and Edward E. Rickman Research Triangle Institute 3040 Cornwallis Road P.O. Box 12194 Research Triangle

More information

Chapter 2. The Structure of Matter and. Review Skills

Chapter 2. The Structure of Matter and. Review Skills Chapter 2 The Structure of Matter and the Chemical Elements One doesn t discover new lands without consenting to lose sight of the shore for a very long time. Andre Gide French Novelist and Essayist n

More information

A dozen. Molar Mass. Mass of atoms

A dozen. Molar Mass. Mass of atoms A dozen Molar Mass Science 10 is a number of objects. A dozen eggs, a dozen cars, and a dozen people are all 12 objects. But a dozen cars has a much greater mass than a dozen eggs because the mass of each

More information

How much does a single atom weigh? Different elements weigh different amounts related to what makes them unique.

How much does a single atom weigh? Different elements weigh different amounts related to what makes them unique. How much does a single atom weigh? Different elements weigh different amounts related to what makes them unique. What units do we use to define the weight of an atom? amu units of atomic weight. (atomic

More information

Chapter 3. The Structure of Matter and. Review Skills

Chapter 3. The Structure of Matter and. Review Skills Chapter 3 The Structure of Matter and the Chemical Elements One doesn t discover new lands without consenting to lose sight of the shore for a very long time. Andre Gide French Novelist and Essayist n

More information

Chem 31 Fall 2002. Chapter 3. Stoichiometry: Calculations with Chemical Formulas and Equations. Writing and Balancing Chemical Equations

Chem 31 Fall 2002. Chapter 3. Stoichiometry: Calculations with Chemical Formulas and Equations. Writing and Balancing Chemical Equations Chem 31 Fall 2002 Chapter 3 Stoichiometry: Calculations with Chemical Formulas and Equations Writing and Balancing Chemical Equations 1. Write Equation in Words -you cannot write an equation unless you

More information

Victims Compensation Claim Status of All Pending Claims and Claims Decided Within the Last Three Years

Victims Compensation Claim Status of All Pending Claims and Claims Decided Within the Last Three Years Claim#:021914-174 Initials: J.T. Last4SSN: 6996 DOB: 5/3/1970 Crime Date: 4/30/2013 Status: Claim is currently under review. Decision expected within 7 days Claim#:041715-334 Initials: M.S. Last4SSN: 2957

More information

Atoms, Ions and Molecules The Building Blocks of Matter

Atoms, Ions and Molecules The Building Blocks of Matter Atoms, Ions and Molecules The Building Blocks of Matter Chapter 2 1 Chapter Outline 2.1 The Rutherford Model of Atomic Structure 2.2 Nuclides and Their Symbols 2.3 Navigating the Periodic Table 2.4 The

More information

Moles. Moles. Moles. Moles. Balancing Eqns. Balancing. Balancing Eqns. Symbols Yields or Produces. Like a recipe:

Moles. Moles. Moles. Moles. Balancing Eqns. Balancing. Balancing Eqns. Symbols Yields or Produces. Like a recipe: Like a recipe: Balancing Eqns Reactants Products 2H 2 (g) + O 2 (g) 2H 2 O(l) coefficients subscripts Balancing Eqns Balancing Symbols (s) (l) (aq) (g) or Yields or Produces solid liquid (pure liquid)

More information

SOFIA UNIVERSITY ST. KLIMENT OHRIDSKI Faculty:...Chemistry and Pharmacy... Subject area: (code and name) C H L 3 8 2 4 1 3

SOFIA UNIVERSITY ST. KLIMENT OHRIDSKI Faculty:...Chemistry and Pharmacy... Subject area: (code and name) C H L 3 8 2 4 1 3 Approved by:.. Dean Date... SOFIA UNIVERSITY ST. KLIMENT OHRIDSKI Faculty:...Chemistry and Pharmacy... Subject area: (code and name) C H L 3 8 3...Pharmacy... M.Sc. Program: (code and name) C H L 3 8 3...Pharmacy...

More information

Name Date Class CHEMICAL QUANTITIES. SECTION 10.1 THE MOLE: A MEASUREMENT OF MATTER (pages 287 296)

Name Date Class CHEMICAL QUANTITIES. SECTION 10.1 THE MOLE: A MEASUREMENT OF MATTER (pages 287 296) 10 CHEMICAL QUANTITIES SECTION 10.1 THE MOLE: A MEASUREMENT OF MATTER (pages 287 296) This section defines the mole and explains how the mole is used to measure matter. It also teaches you how to calculate

More information

UNIT (4) CALCULATIONS AND CHEMICAL REACTIONS

UNIT (4) CALCULATIONS AND CHEMICAL REACTIONS UNIT (4) CALCULATIONS AND CHEMICAL REACTIONS 4.1 Formula Masses Recall that the decimal number written under the symbol of the element in the periodic table is the atomic mass of the element. 1 7 8 12

More information

1. When the following equation is balanced, the coefficient of Al is. Al (s) + H 2 O (l)? Al(OH) 3 (s) + H 2 (g)

1. When the following equation is balanced, the coefficient of Al is. Al (s) + H 2 O (l)? Al(OH) 3 (s) + H 2 (g) 1. When the following equation is balanced, the coefficient of Al is. Al (s) + H 2 O (l)? Al(OH) (s) + H 2 (g) A) 1 B) 2 C) 4 D) 5 E) Al (s) + H 2 O (l)? Al(OH) (s) + H 2 (g) Al (s) + H 2 O (l)? Al(OH)

More information

Chemistry Post-Enrolment Worksheet

Chemistry Post-Enrolment Worksheet Name: Chemistry Post-Enrolment Worksheet The purpose of this worksheet is to get you to recap some of the fundamental concepts that you studied at GCSE and introduce some of the concepts that will be part

More information

Multicrystalline solar silicon production for development of photovoltaic industry

Multicrystalline solar silicon production for development of photovoltaic industry Multicrystalline solar silicon production for development of photovoltaic industry A.I. Nepomnyaschikh Institute of Geochemistry, Siberian Branch, Russian Academy of Sciences, E-mail: ainep@igc.irk.ru

More information

Bonding in Elements and Compounds. Covalent

Bonding in Elements and Compounds. Covalent Bonding in Elements and Compounds Structure of solids, liquids and gases Types of bonding between atoms and molecules Ionic Covalent Metallic Many compounds between metals & nonmetals (salts), e.g. Na,

More information

Tuesday, November 27, 2012 Expectations:

Tuesday, November 27, 2012 Expectations: Tuesday, November 27, 2012 Expectations: Sit in assigned seat Get out Folder, Notebook, Periodic Table Have out: Spiral (notes), Learning Target Log (new) No Backpacks on tables Listen/Pay Attention Learning

More information

Recycling Rates of Metals

Recycling Rates of Metals Recycling Rates of Metals A Status Report United Nations Environment Programme Acknowledgments Editor: International Resource Panel, Working Group on the Global Metal Flows Lead author: T. E. Graedel;

More information

The Analysis of Drinking Waters by U.S. EPA Method 200.8 Using the NexION 300Q/350Q ICP-MS in Standard Mode

The Analysis of Drinking Waters by U.S. EPA Method 200.8 Using the NexION 300Q/350Q ICP-MS in Standard Mode APPLICATION NOTE ICP - Mass Spectrometry Authors Ewa Pruszkowski, Ph.D. Senior ICP-MS Application Scientist Cynthia P. Bosnak Senior Product Specialist PerkinElmer, Inc. Shelton, CT USA The Analysis of

More information

STN. Screen Dictionary for Structure Searching 3 rd Edition. Copyright 2011 American Chemical Society All rights reserved

STN. Screen Dictionary for Structure Searching 3 rd Edition. Copyright 2011 American Chemical Society All rights reserved STN Screen Dictionary for Structure Searching 3 rd Edition Copyright 2011 American Chemical Society All rights reserved Table of Contents STN Screen Dictionary for Structure Searching...3 Types of Screens...8

More information

AP Chapter 1, 2, & 3: Atoms, Molecules, and Mass Relationships Name

AP Chapter 1, 2, & 3: Atoms, Molecules, and Mass Relationships Name AP Chapter 1, 2, & 3: Atoms, Molecules, and Mass Relationships Name Warm-Ups (Show your work for credit) Date 1. Date 2. Date 3. Date 4. Date 5. Date 6. Date 7. Date 8. AP Chapter 1, 2, & 3: Atoms & Molecules,

More information

P. Table & E Configuration Practice TEST

P. Table & E Configuration Practice TEST P. Table & E Configuration Practice TEST Multiple Choice Identify the choice that best completes the statement or answers the question. 1. A line spectrum is produced when an electron moves from one energy

More information

Worksheet # 8 Graham/09 Due

Worksheet # 8 Graham/09 Due CHE 100 Worksheet # 8 Graham/09 Name Key Due 1. According to the law of definite proportions, if a sample of a compound contains 7.00 grams of sulfur and 3.50 grams of oxygen, then another sample of the

More information

University of Pittsburgh Safety Manual Subject: COMBUSTIBLE METALS. EH&S Guideline Number: 02-005. Effective Date 09/10/13.

University of Pittsburgh Safety Manual Subject: COMBUSTIBLE METALS. EH&S Guideline Number: 02-005. Effective Date 09/10/13. Page 1 of 7 These guidelines provide requirements for all University faculty, staff, and students using, handling, or storing combustible metals. These requirements are established to ensure faculty, staff

More information

Chem 1000A Final Examination - Solutions

Chem 1000A Final Examination - Solutions Chem 1000A Final Eamination - Solutions April 15 th, 2003: 9:00 to 12.00 am Your name Instructor: Dr. M. Gerken Student ID Time: 3h No. of pages: 3 + 1 Report all your answers using significant figures.

More information

LAB 5 - PLANT NUTRITION. Chemical Ionic forms Approximate dry Element symbol Atomic weight Absorbed by plants tissue concentration

LAB 5 - PLANT NUTRITION. Chemical Ionic forms Approximate dry Element symbol Atomic weight Absorbed by plants tissue concentration LAB 5 PLANT NUTRITION I. General Introduction All living organisms require certain elements for their survival. Plants are known to require carbon (C), hydrogen (H), oxygen (O), nitrogen (N), phosphorus

More information

Chemistry 65 Chapter 6 THE MOLE CONCEPT

Chemistry 65 Chapter 6 THE MOLE CONCEPT THE MOLE CONCEPT Chemists find it more convenient to use mass relationships in the laboratory, while chemical reactions depend on the number of atoms present. In order to relate the mass and number of

More information

Type: Single Date: Kinetic Theory of Gases. Homework: Read (14.1), Do CONCEPT Q. # (1), Do PROBLEMS # (2, 3, 5) Ch. 14

Type: Single Date: Kinetic Theory of Gases. Homework: Read (14.1), Do CONCEPT Q. # (1), Do PROBLEMS # (2, 3, 5) Ch. 14 Type: Single Date: Objective: Kinetic Theory of Gases Homework: Read (14.1), Do CONCEPT Q. # (1), Do PROBLEMS # (2, 3, 5) Ch. 14 AP Physics Mr. Mirro Kinetic Theory of Gases Date Unlike the condensed phases

More information

ICP - Mono Element 1.000 ppm Standard Solutions (Plasma HIQU)

ICP - Mono Element 1.000 ppm Standard Solutions (Plasma HIQU) ICP - Mono Element 1.000 ppm Standard Solutions (Plasma HIQU) CL01.0101 CL01.0102 CL01.0141 CL01.0121 CL01.0122 CL01.0131 CL01.0132 CL01.0133 CL01.0201 CL01.0202 CL01.0212 CL01.0211 CL01.0221 Aluminium

More information

THE MOLE / COUNTING IN CHEMISTRY

THE MOLE / COUNTING IN CHEMISTRY 1 THE MOLE / COUNTING IN CHEMISTRY ***A mole is 6.0 x 10 items.*** 1 mole = 6.0 x 10 items 1 mole = 60, 00, 000, 000, 000, 000, 000, 000 items Analogy #1 1 dozen = 1 items 18 eggs = 1.5 dz. - to convert

More information

MASS RELATIONSHIPS IN CHEMICAL REACTIONS

MASS RELATIONSHIPS IN CHEMICAL REACTIONS MASS RELATIONSHIPS IN CHEMICAL REACTIONS 1. The mole, Avogadro s number and molar mass of an element. Molecular mass (molecular weight) 3. Percent composition of compounds 4. Empirical and Molecular formulas

More information

CHAPTER 3 Calculations with Chemical Formulas and Equations. atoms in a FORMULA UNIT

CHAPTER 3 Calculations with Chemical Formulas and Equations. atoms in a FORMULA UNIT CHAPTER 3 Calculations with Chemical Formulas and Equations MOLECULAR WEIGHT (M. W.) Sum of the Atomic Weights of all atoms in a MOLECULE of a substance. FORMULA WEIGHT (F. W.) Sum of the atomic Weights

More information

Composition of nucleus. Priority Vocabulary: Electron, Proton, Neutron, Nucleus, Isotopes, Atomic Number, Atomic Mass, Element, Electron Shell,

Composition of nucleus. Priority Vocabulary: Electron, Proton, Neutron, Nucleus, Isotopes, Atomic Number, Atomic Mass, Element, Electron Shell, Lake County, Lakeview, 9 th grade, Physical Science, Brent Starr Standard: H1P1 Explain how atomic structure is related to the properties of elements and their position in the Periodic Table. Explain how

More information

MOLECULAR MASS AND FORMULA MASS

MOLECULAR MASS AND FORMULA MASS 1 MOLECULAR MASS AND FORMULA MASS Molecular mass = sum of the atomic weights of all atoms in the molecule. Formula mass = sum of the atomic weights of all atoms in the formula unit. 2 MOLECULAR MASS AND

More information

AS1 MOLES. oxygen molecules have the formula O 2 the relative mass will be 2 x 16 = 32 so the molar mass will be 32g mol -1

AS1 MOLES. oxygen molecules have the formula O 2 the relative mass will be 2 x 16 = 32 so the molar mass will be 32g mol -1 Moles 1 MOLES The mole the standard unit of amount of a substance the number of particles in a mole is known as Avogadro s constant (L) Avogadro s constant has a value of 6.023 x 10 23 mol -1. Example

More information

AP Chemistry 2006 Free-Response Questions

AP Chemistry 2006 Free-Response Questions AP Chemistry 006 Free-Response Questions The College Board: Connecting Students to College Success The College Board is a not-for-profit membership association whose mission is to connect students to college

More information

Ch. 6 Chemical Composition and Stoichiometry

Ch. 6 Chemical Composition and Stoichiometry Ch. 6 Chemical Composition and Stoichiometry The Mole Concept [6.2, 6.3] Conversions between g mol atoms [6.3, 6.4, 6.5] Mass Percent [6.6, 6.7] Empirical and Molecular Formula [6.8, 6.9] Bring your calculators!

More information

Calculating Atoms, Ions, or Molecules Using Moles

Calculating Atoms, Ions, or Molecules Using Moles TEKS REVIEW 8B Calculating Atoms, Ions, or Molecules Using Moles TEKS 8B READINESS Use the mole concept to calculate the number of atoms, ions, or molecules in a sample TEKS_TXT of material. Vocabulary

More information

Lecture 3: (Lec3A) Atomic Theory

Lecture 3: (Lec3A) Atomic Theory Lecture 3: (Lec3A) Atomic Theory Mass of Atoms Sections (Zumdahl 6 th Edition) 3.1-3.4 The Concept of the Mole Outline: The mass of a mole of atoms and the mass of a mole of molecules The composition of

More information

Stoichiometry. Lecture Examples Answer Key

Stoichiometry. Lecture Examples Answer Key Stoichiometry Lecture Examples Answer Key Ex. 1 Balance the following chemical equations: 3 NaBr + 1 H 3 PO 4 3 HBr + 1 Na 3 PO 4 2 C 3 H 5 N 3 O 9 6 CO 2 + 3 N 2 + 5 H 2 O + 9 O 2 2 Ca(OH) 2 + 2 SO 2

More information

7. 1.00 atm = 760 torr = 760 mm Hg = 101.325 kpa = 14.70 psi. = 0.446 atm. = 0.993 atm. = 107 kpa 760 torr 1 atm 760 mm Hg = 790.

7. 1.00 atm = 760 torr = 760 mm Hg = 101.325 kpa = 14.70 psi. = 0.446 atm. = 0.993 atm. = 107 kpa 760 torr 1 atm 760 mm Hg = 790. CHATER 3. The atmosphere is a homogeneous mixture (a solution) of gases.. Solids and liquids have essentially fixed volumes and are not able to be compressed easily. have volumes that depend on their conditions,

More information

Chalcophile and Key Element Distribution in the Eastern Goldfields: seismic traverse EGF01. Aleks Kalinowski Geoscience Australia, pmdcrc Y2 project

Chalcophile and Key Element Distribution in the Eastern Goldfields: seismic traverse EGF01. Aleks Kalinowski Geoscience Australia, pmdcrc Y2 project pmd CR C Chalcophile and Key Element Distribution in the Eastern Goldfields: seismic traverse EGF01 predictive mineral discovery Aleks Kalinowski Geoscience Australia, pmdcrc Y2 project Aleks.Kalinowski@ga.gov.au

More information

Calculation of Molar Masses. Molar Mass. Solutions. Solutions

Calculation of Molar Masses. Molar Mass. Solutions. Solutions Molar Mass Molar mass = Mass in grams of one mole of any element, numerically equal to its atomic weight Molar mass of molecules can be determined from the chemical formula and molar masses of elements

More information

CHEMICAL FORMULAE AND STOICHIOMETRY

CHEMICAL FORMULAE AND STOICHIOMETRY LOCUS 1 Section - CHEMICAL FORMULAE AND STOICHIOMETRY The language that chemists use to describe the forms of matter and the changes in its composition appears throughout the scientific world. Chemical

More information

SCP SCIENCE www.scpscience.com. Certified Reference Materials. Materials

SCP SCIENCE www.scpscience.com. Certified Reference Materials. Materials Certified Reference 47 EnviroMAT and AgroMAT Certifi ed Reference (CRMs) are designed to complement existing Performance Evaluation Programs in environmental and agricultural analysis. EnviroMAT CRMs allow

More information

EDEXCEL INTERNATIONAL GCSE CHEMISTRY EDEXCEL CERTIFICATE IN CHEMISTRY ANSWERS SECTION E

EDEXCEL INTERNATIONAL GCSE CHEMISTRY EDEXCEL CERTIFICATE IN CHEMISTRY ANSWERS SECTION E EDEXCEL INTERNATIONAL GCSE CHEMISTRY EDEXCEL CERTIFICATE IN CHEMISTRY ANSWERS SECTION E (To save endless repetition, wherever they are included, comments are intended for homeschooling parents who may

More information

F321 MOLES. Example If 1 atom has a mass of 1.241 x 10-23 g 1 mole of atoms will have a mass of 1.241 x 10-23 g x 6.02 x 10 23 = 7.

F321 MOLES. Example If 1 atom has a mass of 1.241 x 10-23 g 1 mole of atoms will have a mass of 1.241 x 10-23 g x 6.02 x 10 23 = 7. Moles 1 MOLES The mole the standard unit of amount of a substance (mol) the number of particles in a mole is known as Avogadro s constant (N A ) Avogadro s constant has a value of 6.02 x 10 23 mol -1.

More information

Put the human back in Human Resources.

Put the human back in Human Resources. Put the human back in Human Resources A Co m p l et e Hu m a n Ca p i t a l Ma n a g em en t So l u t i o n t h a t em p o w er s HR p r o f essi o n a l s t o m eet t h ei r co r p o r a t e o b j ect

More information

= 1.038 atm. 760 mm Hg. = 0.989 atm. d. 767 torr = 767 mm Hg. = 1.01 atm

= 1.038 atm. 760 mm Hg. = 0.989 atm. d. 767 torr = 767 mm Hg. = 1.01 atm Chapter 13 Gases 1. Solids and liquids have essentially fixed volumes and are not able to be compressed easily. Gases have volumes that depend on their conditions, and can be compressed or expanded by

More information

Chapter 4. Chemical Composition. Chapter 4 Topics H 2 S. 4.1 Mole Quantities. The Mole Scale. Molar Mass The Mass of 1 Mole

Chapter 4. Chemical Composition. Chapter 4 Topics H 2 S. 4.1 Mole Quantities. The Mole Scale. Molar Mass The Mass of 1 Mole Chapter 4 Chemical Composition Chapter 4 Topics 1. Mole Quantities 2. Moles, Masses, and Particles 3. Determining Empirical Formulas 4. Chemical Composition of Solutions Copyright The McGraw-Hill Companies,

More information

Chapter 3: Stoichiometry

Chapter 3: Stoichiometry Chapter 3: Stoichiometry Key Skills: Balance chemical equations Predict the products of simple combination, decomposition, and combustion reactions. Calculate formula weights Convert grams to moles and

More information

Name: Class: Date: 2 4 (aq)

Name: Class: Date: 2 4 (aq) Name: Class: Date: Unit 4 Practice Test Multiple Choice Identify the choice that best completes the statement or answers the question. 1) The balanced molecular equation for complete neutralization of

More information