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1. A gaseous mixture at a constant temperature contains O2, CO2, andHe. Which of the following lists the 3 gases in order of decreasing average molecular speed?
He, CO2, O2 CO2, He, O2 O2, CO2, He CO2, O2, He He, O2, CO2

2. 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

3. Body temperature is around 308oK. What volume of air at 298oK must a person with a lung capacity of 2.5 L breath in to fill the lungs?
2.58 L 0.00811 L 2.42 L 4.26 L None of the above

4. What is the density of methane at 1.00 atm and 298oK?
0.327 g/L 0.654 g/L 1.308 g/L 4.26 g/L None of the above

5. A balloon occupies a volume of 1.0 liter when it contains 0.08 grams of hydrogen gas at STP. If hydrogen gas is added to the balloon while pressure and temp are kept constant, what will be the new volume?
0.50 L 1.0 L 2.0 L 4.0 L 5.0 L

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