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1. 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

2. An oxygen sample contains volume of 6.00 L at 25oC and 900. torr. How many molecules does this sample contain?
0.291 0.502 2.46*10^23 1.75*10^23 6.02*10^23

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

4. 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

5. What is the density of hydrogen gas at 800. torr and 25oC?
0.0861 1.03 4.06 2.02 None of the above

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