Gas Laws and Matter Review

If 4.00 moles of oxygen gas, 3.00 moles of hydrogen gas, and 1.00 mole of nitrogen gas are combined in a closed container at standard pressure, what is the partial pressure exerted by the hydrogen gas?

• 1.00 atm

• 0.125 atm

• 3.00 atm

• 3.375 atm

A 36-gram sample of water has an initial temperature of 22

oC. After the sample absorbs 1200 joules of heat energy, the final temperature of the sample is (The specific heat capacity of water is 4.18 J/g∙°C)

• 8 C

• 14 C

• 30 C

• 55 C

Which line segment represents an increase in potential energy and no change in average kinetic energy?

• AB

• BC

• CD

• EF

Which graph best shows the relationship between the pressure of a gas and its average kinetic energy at constant volume?

• 1

• 2

• 3

• 4

Which two gas samples contain the same total number of particles?

• CH4 and CO2

• He and CO2

• CH4 and Ne

• He and Ne

A gas has a volume of 350 ml at 45C. If the volume changes to 400 ml, what is the new temperature? ( answer in oC )

• 45 C

• 90 C

• 135 C

• 180 C

Using Table H, what material has the highest vapor pressure at 50 C?

• Propanone

• Water

• Ethanol

• Ethanoic Acid

Blast furnaces give off many unpleasant and unhealthy gases. If the total air pressure is 0.99 atm, the partial pressure of carbon dioxide is 0.05 atm, and the partial pressure of hydrogen sulfide is 0.02 atm, what is the partial pressure of the remaining air?

• .99 atm

• .95 atm

• .92 atm

• None of the above

The gas left in a used aerosol can is at a pressure of 1 atm at 270C. If this can is thrown into a fire, what is the internal pressure of the gas when its temperature reaches 927C?

• 1 atm

• 2 atm

• 3 atm

• 4 atm

If the Hab on Mars were made of a flexible material and the temperature in the Hab decreased because the heaters malfunctioned, how would the volume of the hab change?

• increase

• decrease

• stay the same