Unit 6: Gas Laws Comprehensive Review

Determine the number of moles in a container of gas at STP with a volume of 99.2 L. 

• 2222.08 moles
• 4.43 moles
• 22.4 moles 
• 76.8 moles

If the pressure exerted by a gas at 25 degrees C in a volume of 0.044 L is 3.81 atm, how many moles of gas are present?

• .002766 mole
• .0069 mol
• 2.766 mol
• 9.887 mol

At STP, what is pressure in atmospheres?

• 1 atm
• 10 atm
• 0 atm
• 100 atm

What is the temperature of natural gas in an oil pipeline if we know there are 0.91 moles of the gas in the pipeline and the volume of the pipeline is 5.43 L and the gas is exerting a pressure of 4.21 atm?
R = 0.082  (L x atm) / (K x mol)

• 306 °C
• 579.4 °C
• 33.4 °C
• - 19.3 °C

For his chemistry demonstration, Davy filled up a 5 L balloon with nitrous oxide gas at 25°C and an atmospheric pressure of 1.08 atm. For easier transportation he stored it in a pressurized container at 1.5 atm and temperature of 5°C. What volume will the balloon have?

• 9.77 L
• 3.36 L
• 7.56 L
• 4.35 L

The gas in an aerosol can exerts a pressure of 3.00 atm at 25°C. Directions on the can warn the user not to keep the can in a place where the temperature exceeds 100°C. What would the gas pressure in the can be at 100°C?

• 3.76 atm
• 2.40 atm
• 12 atm
• 0.75 atm

A balloon of Argon gas has a volume of 150. mL when its pressure is 0.647 atm. What will the pressure of the gas be at a volume of 98.3 mL if the temperature remains constant?

• 0.987 atm
• 1.53 atm
• 2.36 atm
• 97.1 atm

How do you convert between Celsius and Kelvin?

• add 273
• add 260
• add 293
• change the C to a K

Calculate:
If I have 5.6 liters of gas in a piston at a pressure of 1.5 atm and compress the gas until its volume is 4.8 L, what will the new pressure inside the piston be? 

• 1.3 atm
• 2.2 atm
• 1.8 atm

Calculate:
I have 130 liters of gas in a piston at a temperature of 250⁰ C.  If I cool the gas until the volume decreases to 85 liters, what will temperature of the gas be? 

• 163 K
• 342 K
• 800 K