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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. In a certain container, you have 0.2 moles O2 and 0.3 moles N2. What is the partial pressure of the oxygen at STP?
0.2 atm 0.3 atm 0.4 atm 0.5 atm 0.6 atm

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

4. A gas is heated from -10.0oC to 60oC and the volume is increased from 1.0 L to 6.0 L. If the initial pressure is 0.5 atm, what is the final pressure?
0.10 atm 0.11 atm 0.12 atm 0.25 atm 0.50 atm

5. At constant temperature, pressure, and volume, which gas has the most molecules?
He H2 Cl2 F2 All of the above

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