CH 304K Practice Problems

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1 1 CH 304K Practice Problems Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. How many millimeters are there in 25 feet? a mm b mm c mm d mm e mm 2. What is the height in centimeters of a person who is 6 feet 10 inches tall? a cm b cm c cm d cm e cm 3. Express square yards in square centimeters. a cm 2 b cm 2 c cm 2 d cm 2 e cm 2 4. What is 16.7 cubic feet expressed in cubic centimeters? a cm 3 b. 510 cm 3 c cm 3 d cm 3 e cm 3 5. If an airplane's speed is 850 mi/h, what is its speed in m/s? a. 40 m/s b m/s c. 380 m/s d. 528 m/s e m/s 6. On the planet Xgnu, the most common units of length are the bilm (for long distance) and the kryll (for Two cities on Xgnu are 36.2 blim apart. What is this distance in kryll? a x 10 4 kryll d x 10 5 kryll b x 10 3 kryll e x 10 6 kryll c x 10 4 kryll 7. On the planet Xgnu, the most common units of length are the bilm (for long distance) and the kryll (for The average Xgnunese is 170 kryll tall. What is this height in blims? a blim d blim b blim e blim c blim

2 2 8. On the planet Xgnu, the most common units of length are the bilm (for long distance) and the kryll (for The chemistry book at the Xgnu University has an area of 72.5 square krylls. What is the area of the book in square blims. a blim 2 d blim 2 b x 10-3 blim 2 e x 10-5 blim 2 c x 10-6 blim 2 9. Suppose your car is rated at 45 miles per gallon highway use and 38 miles per gallon for city driving. If you wanted to write your friend in Spain about your car s mileage, what rating for highway mileage in kilometers per liter would you report? (1 gallon = 4 quarts; 1 liter = quarts; 1 mile = km) a. 62 km/l d. 19 km/l b. 8.0 km/l e. 15 km/l c. 76 km/l 10. The distance 10.5 cm could also be expressed as _m. a m d m b m e m c m 11. The length 100 mm can also be expressed as _cm. a. 0.1 cm d cm b cm e cm c. 10 cm 12. The planet Jupiter is about 4.0 x 10 8 mi from Earth. If radio signals travel at the speed of light, which is 3.0 x cm/s, how long would it take ( in hours) a radio command from Earth to reach a spacecraft passing Jupiter? a hr d hr b. 5.8 hr e. 2.9 hr c. 58 hr 13. Which of the following samples has the smallest volume? a. 2.3 x 10 2 ml c. 2.3 x 10 2 ml b. 2.3 x 10 2 L d. 2.3 x 10 2 kl 14. The mass kg can also be expressed as _mg. a x 10 6 mg d x 10 9 mg b x 10 3 mg e x mg c x 10-9 mg 15. Convert 65 cm 3 to km 3. a. 6.5 x km 3 d. 6.5 x km 3 b. 6.5 x km 3 e. 6.5 x 10-6 km 3 c. 6.5 x km Convert 20.0 cubic yards to cubic meters. (1.0 yd = 3 ft; 1.0 in = 2.54 cm; 1.0 ft = 12 in) a m 3 d m 3 b m 3 e m 3 c m How many times more expensive is buying a carbonated beverage in 12-oz cans at forty cents each relative to buying it in three-liter bottles at $1.49 each? (1.0 L = qts; 1.0 qt = 32 oz) a d b e c. 2.54

3 3 18. Zinc has a density of 446 lb/ft 3. What is the density of zinc in g/cm 3? (1 lb = g; 1.0 in = 2.54 cm) a g/cm 3 c x 10 3 g/cm 3 b g/cm 3 d g/cm Alcohol has a density of 0.78 g/ml. How many grams of alcohol would it take to fill a 2 fluid ounce shot glass? (1 qt = 32 fluid ounces: 1 liter = qt) a. 59 g d. 122 g b. 368 g e g c. 46 g 20. The density of Mg is 1.74 g/cm 3. What is the mass of a Mg block that measures 2.5 cm 3.5 cm 1.5 cm? a. 48 g c. 12 g b. 23 g d. 7.5 g 21. There are exactkt 32 ounces in a quart. How many cubic inches are in 1.0 ounce? 1 quart = liter) a. 12 in 3 c. 1.8 x 10 3 in 3 b. 4.8 x 10 2 in 3 d. 1.8 in The output of a production plant is 4335 pounds of ball bearings per week (5 days). If each ball bearing weighs g, how may ball bearings does the production plant make in a single day? (1.0 lb = g) a x 10 5 d x 10 7 b x 10 4 e x 10 6 c Below is a list of common prefixes used in the SI and metric systems. Included with each is an abbreviation and meaning. Which set contains an error? a. mega- M 10-6 b. deci- d 10-1 c. nano- n 10-9 d. milli- m 10-3 e. kilo- k What is the area in square millimeters of a rectangle that is cm long and mm wide? a mm 2 b mm 2 c mm 2 d mm 2 e mm What is the area (in mm 2 ) of a rectangular surface that is inch wide and 1.14 inches long? a. 471 mm 2 b. 328 mm 2 c mm 2 d. 242 mm 2 e. 680 mm The density of mercury is 13.6 g/cm 3. What is the mass of 6.50 cm 3 of mercury? a g b g c g d g e g 27. A gold ring has a mass of g. If this ring is pure gold (density = 16.1g/mL), what would the volume of the ring be? a ml b ml

4 4 c ml d ml e ml 28. The density of octane is g/cm 3. What is the mass of 65.0 ml of octane? a. 110 g b g c g d g e g 29. Convert 1.57 g to kg, cg, and mg. a kg, cg, mg b kg, cg, 1570 mg c kg, 157 cg, 1570 mg d. 157 kg, 1570 cg, mg e kg, cg, 157 mg

5 5 CH 304K Practice Problems Answer Section MULTIPLE CHOICE 1. ANS: D TOP: The Unit Factor Method (Dimensional Analysis) 2. ANS: D TOP: The Unit Factor Method (Dimensional Analysis) 3. ANS: D TOP: The Unit Factor Method (Dimensional Analysis) 4. ANS: E TOP: The Unit Factor Method (Dimensional Analysis) 5. ANS: C TOP: The Unit Factor Method (Dimensional Analysis) 6. ANS: C 7. ANS: A 8. ANS: E 9. ANS: D 10. ANS: A 11. ANS: C 12. ANS: A 13. ANS: C 14. ANS: D 15. ANS: A 16. ANS: C 17. ANS: B 18. ANS: A 19. ANS: C 20. ANS: B 21. ANS: D 22. ANS: D 23. ANS: A TOP: Measurements in Chemistry 24. ANS: A TOP: The Unit Factor Method (Dimensional Analysis) 25. ANS: A TOP: The Unit Factor Method (Dimensional Analysis) 26. ANS: C TOP: The Unit Factor Method (Dimensional Analysis) 27. ANS: B TOP: Density and Specific Gravity 28. ANS: C TOP: Density and Specific Gravity 29. ANS: D TOP: Density and Specific Gravity 30. ANS: C OBJ: Goal 3-6

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