gaslaw

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

What causes pressure?

• The walls of the container
• The vacuum in the container
• The collisions of the particles
• Atmospheric pressure acting on the outside walls

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

Calculate the volume that a 0.323-mol sample of a gas will occupy at 265 K and a pressure of 0.900 atm.

• 7.18 L 
• 7.81 L
• 4.63 L
• 4.36 L

A gas has a volume of 22.4 L at STP.  What is the new volume if the pressure is increased to 2 atm and the temperature is decreased to 250 K?

• 10.3 L
• 24.5 L
• 48.9 L
• 20.6 L

You have a gas that has a pressure of 2 ATM and a volume of 10L.  What would be the new volume if the pressure was changed to 1 ATM?

• 5 L
• 20 L
• It would stay at 10L
• 1 L

A sample of carbon dioxide at STP is 0.50 L.  How many grams of carbon dioxide do we have?

• 0.48 g
• 0.49 g
• 1.96 g
• 0.98 g

A 7.00 L sample of argon gas at 420. K exerts a pressure of 625 kPa.  If the gas is compressed to 1.25 L and the temperature is lowered to 350 K, what will be its new pressure in atm?

• 10.4 atm
• 2920 atm
• 2916.7 atm
• 28.8 atm

Convert 4500 mm Hg to Kpa.

• 5.9 Kpa
• 44.51 Kpa
• 455,850 Kpa
• 600 Kpa

A cylinder with a movable piston contains a sample of gas having a volume of 6.0 liters at 293 K and 1.0 atmosphere.  The gas is heated to 303 K, while the pressure is increased to 1.29 atmosphere. What is the final volume of the gas?

• 8.0 L
• 7.5 L
• 4.8 L
• 4.2 L