Gas Law Basics

A student measures the pressure and volume of an empty water bottle to be 1.4 atm and 2.3 L. She then decreases the pressure to 0.65 atm. What is the new volume?

• 2.1 L

• 8.2L

• 5.0L

• 3.9L

A student inflates a balloon with helium then places it in the freezer. The student should expect

• 
  the balloon's volume to increase

• the balloon's moles to increase

• the balloon's moles to decrease

• the balloon's volume to decrease

What is the pressure of a car tire that had an initial pressure of 1.8 atm but was heated from 38°C to 123°C?

• 
  0.9 atm

• 
  

  2.1 atm

• 1.6 atm

• 3.4 atm

Three gases are mixed together in a container with a total pressure of 4.8 atm. If two of the gases have pressures of 1.2 atm and 1.5 atm, what is the pressure of the third gas?

• 
  2.5 atm

• 
  1.8 atm

• 
  2.1 atm

• 1.3 atm

If a hairspray can is heated, what can be expected of the pressure of the gas inside the can?

• The pressure will increase

• 
  The pressure will remain constant

• 
  The pressure will decrease

• 
  The pressure will equalize

What is 50 °C in Kelvin?

• 223

• 100

• 50

• 323

Charles' Law States...

• As Pressure goes up volume goes down

• As Volume goes up temperature goes up 

• As Pressure goes up temperature goes up

• As Pressure goes down volume goes down 

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

• 60.0 L

• 
  15.0 L

• 27.5 L

• 32.5 L

What units are typically used for volume and temperature?

• mm and C

• L and C

• L and K

• mm and K

Boyle's Law says that volume and pressure are inversely proportional, what does inversely mean?

• opposite

• the same

• different

• equal