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1. A volume of an unknown gas is 300 L at STP. What volume will the gas occupy at 0.0 oC and 1000. torr?
209 L 12.3 L 46.3 L 227 L None of the above

2. Calculate the mole fraction of gas A, which has a pressure of 110. torr, in the air, which has a pressure of 800. torr.
0.138 0.427 0.121 4.23 13.8

3. If you have a gas taking 14.0 L at 800. torr and 26oF, calculate the volume of the gas at 40oC and 2 atm.
4.13 L 16.34 L 8.27 L 5674 L 4.26 L

4. Which gas is the most abundant in the Earth's atmosphere?
N2 O2 He H2 CO2

5. At 298oK, 800. torr, and 250. mL of gas has a mass of 4.62 grams. What is its molecular weight?
300 46 3.21 0.0107 429

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