HOMEWORK SET 3

1. Convert 17.2 dm to ft.

a. 5.67 b. 5.68 c. 0.366
d. 3.66 e. 136

2. Convert 3.3 oz to dag.

a. 9.4 b. 24 c. 150
d. 220 e. 2400

3. An intravenous solution is 5.0% by weight glucose. What mass of glucose is in 72 g of solution?

a. 3.6 g b. 5.0 g 
c. 68.4 g d. 95 g
e. none of these

4. Calculate the area of a 5.0 in by 9.0 in file card in square centimeters.

a. 1.29 b. 3.6 c. 110
d. 290 e. 330

5. Convert 62 miles per hour into ft. per second.

a. 89 b. 90 c. 91 
d. 92 e. none of these

6. Mercury has a density of 13.6 g/cm³ at 20^oC. What is the volume in mL of 100. g of mercury.

a. 0.680 b. 1.47 c. 2.72
d. 6.72 e. 7.35

7. Convert 222^oC to Kelvins.

a. -51 b. 342 c. 360
d. 457 e. 495

8. Calculate the specific heat of a solid in J/g^oC if 44.4 J is required to heat 39.9 g of the substance by 4.0^oC.

a. 0.23 b. 0.28 c. 0.30
d. 2.7 e. 3.7

9. Arsenic melts at 33^oC. Convert this temperature to ^oF.

a. 27 b. 34 c. 91
d. 117 e. 306

10. How many grams of water are contained in 222 g of alcohol-water solution that is 37.2% alcohol.

a. 5.97 b. 82.6 c. 128
d. 139 e. 353

11. How many joules of energy are needed to heat 32.0 g sulfur from 17.2^oC to 33.1^oC.

a. 1.47 b. 5.82 c. 89.0
d. 266 e. 373

12. Osmium is a metal with a high density of 22.5 g/cm³ at 20^oC. Calculate the mass, in pounds, of a pint of osmium.

a. 35.4 b. 40.7 c. 46.9
d. 50.1 e. 59.8

13. A 101g silver bar (specific heat 0.24 J/g^oC) is heated to 127^oC and placed in 55 g H₂O at 23^oC. What will be the final temperature of the system?

a. 28^oC b. 33^oC 
c. 41^oC d. 53^oC
e. 62^oC

14. A cylinder with a radius of 5.0 cm and height of 18.0 cm weighs 2.0 kg. What is the density of the cylinder in g/mL?

a. 1.4 b. 4.3 c. 7.1
d. 25 e. 43

15. At 4^oC water has a density of 1.0 g/mL. What is this density in pounds per cubic foot?

a. 1.0 b. 8.1 c. 42 d. 53 e. 62

16. A distance of one millimeter relates most closely to which of the following?

a. diameter of human hair
b. diameter of the wire in a paper clip
c. diameter of a piece of chalk
d. diameter of a half dollar
e. the diameter of an Au atom.

17. The metric volume unit that is closest in size to the English unit quart is:

a. milliliter 
b. cubic centimeter
c. liter d. kiloliter
e. deciliter

18. 32.1 centigrams is equivalent to how many pounds?

a. 0.321 pound
b. 0.145 pound
c. 7.08 x 10^-4 pound
d. 3.21 x 10^-3 pound

19. 0.32 cubic feet is equivalent to how many cubic meters?

a. 9.7 x 10^-6 cubic meters
b. 9.1 x 10^-3 cubic meters
c. 9.7 x 10^-2 cubic meters
d. 9.1 x 10¹ cubic meters

20. Which of the following comparisons of the size of a degree on the major temperature scales is correct?

a. A Kelvin degree is larger than a Celsius degree.
b. A Fahrenheit degree and a Celsius degree are equal in size
c. A Fahrenheit degree is larger than a Kelvin degree.
d. A Celsius degree and a Kelvin degree are equal in size.
e. A Fahrenheit degree is larger than a Celsius degree.