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constants
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1. At constant temperature, pressure, and volume, which molecule has the highest average velocity?
H2 F2 He Br2 All of the above

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

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. A mixture of nitrogen gas and oxygen gas is kep at constant temperature. Which is true?
Average kinetic energies will be the same Average molecular speed will be the same Partial pressures will be the same Total masses will be the same Densities will be the same

5. An ideal gas fills a balloon at 1 atm and 67oC. By what factor will the volume of the balloon change if the balloon is heated to 339oC?
9/5 5.9 1/4 4/1 3/4

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