Gas Laws Chapter 14.3

1. In the ideal gas law, which of the following represents the number of moles of the gas?

P
V
n
R
T

2. Real gases deviate most from ideal gas behavior at:

high pressure, high temperature
low pressure, low temperature
low volume, high temperature
high pressure, low temperature
None of the above

3. Which of the following real gases would most likely behave like an ideal gas?

hydrogen
nitrogen
propane
oxygen
chlorine

4. Calculate the number of moles of gas contained in a 3.0 L balloon at 300. K with a pressure of 1.50 atm.

.77 mole
.18 mole
.83 mole
.27 mole
1.4 mole

5. Determine the celsius temperature of 2.49 moles of gas in a 1.00 L balloon at a pressure of 143 kPa.

-231 degrees C
-34 decrees C
267 degrees C
589 degrees C
-266 degrees C

6. Determine the kelvin temperature needed for .047 mole of a gas to fill a balloon to 1.20 L at .988 atm.

307 K
273 K
112 K
301 K
312 K

7. What is the molar mass of a pure gas that has a density of 1.4 g/L at STP?

24.6 g/mole
31.4 g/mole
28.3 g/mole
33 g/mole
1.2 g/mole

8. Which of the following is NOT one of the correct values for the ideal gas constant?

.0821 L-atm/mole-K
8.314 L-kPa/mole-K
6.35 mL-kPa/mole-J
62.4 L-mm Hg/mole-K
All of the above are correct and equal units.

9. What is the density of a gas at STP that has a molar mass of 44.0 g/mole?

2.00 g/L
1.96 g/L
1.77 g/L
.882 g/L
.231 g/L

10. Which of the following would be most likely behave like an ideal gas?

non-polar gas
polar gas
ionic gas