Gases and the KMT Test Review

Which container will have a lower pressure?

• left
• right
• they both have the same pressure
• I don't know

A mixture of hydrogen, nitrogen, and water vapor has a total pressure of 864 mmHg. The partial pressure of hydrogen is 220 mmHg and that of nitrogen is 410 mmHg. What is the partial pressure of water vapor?

• 234 mmHg
• 1.37 mmHg
• 2.64 mmHg
• 1, 494 mmHg

A container with a volume if 1.0 L is occupied by a gas at a pressure of 1.5 atm at 25°C. By changing the volume, the pressure of the gas increases to 6.0 atm as the temp is raised to 100.°C. What’s the new volume?

• 1.45 L

• 5.4 L

• 0. 31 L

• 504.7 L

A sample of gas with a volume of 30.0 mL at 25.0^oC is heated to 50.0^oC. What is the new volume of the gas?

• 60.0 mL

• 15.0 mL

• 27.5 mL

• 32.5 mL

Which of the following would increase the (gas) pressure of a system?

• Increase the Temperature
• Pump in more gas
• Decrease the volume
• All of these

Boyle's law :  The pressure and volume of a gas show a _____ relationship. 

• Inverse 
• Direct 

What volume does 13.6 g of O₂ gas at 37°C and 135 kPa occupy?
PV=nRT

• 6.22 L
• 8.11 L
• 10.54 L
• 12.73 L

Which statement describes the particles of an ideal gas, based on the kinetic molecular theory?

• There are attractive forces between the particles.

• The particles move in circular paths.

• The collisions between the particles reduce the total energy of the gas.

• The volume of the gas particles is negligible compared with the total volume of the gas.

The kinetic molecular theory states that all particles of an ideal gas are

• colliding without transferring energy

• in random, constant, straight-line motion

• arranged in a regular geometric pattern

• separated by small distances relative to their size

A real gas behaves most like an ideal gas at

• low pressure, high temperature, few number of moles

• low pressure, low temperature, and low number of moles

• low pressure, high temperature, and high number of moles

• high pressure, low temperature, and high number of moles