Gas Laws Review

What is 50 C in Kelvin?

• 223
• 323
• 100
• 50

What will happen to the volume of a gas if the pressure on the gas increases, with constant temperature ?

• Increase

• Decrease

• Nothing

• Explosion!

If a balloon is cooled what will happen to the volume?

• Volume will increase
• Volume will decrease
• Volume will not change

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-4

When a cold tire is inflated to a certain pressure and then is warmed up due to friction with the road, the pressure increases. This happens because the

• air molecules hit the walls of the tire less frequently
• rubber in the tires reacts with oxygen in the atmosphere
• air molecules speed up and collide with the tire walls more often
• air molecules diffuse rapidly through the walls of the tire.

Tags

NGSS.MS-PS1-4

Which of the following is NOT a unit of Pressure?

• mmHg

• atm

• kelvin

• kPa

Which equation would you use to solve the following problem:

"The volume of of 300 mL of gas at 1 atm is decreased to 100 mL. What is the new pressure?"

• P₁V₁ = P₂V₂

• V₁/T₁ = V₂/T₂

• (P₁V₁)/T₁ = (P₂V₂)/T₂

• None of the above

Gas is in a rigid container at room temperature. What happens to pressure as temperature increases?

• pressure stays the same

• pressure decreases

• pressure increases

Gas is in a flexible container at room temperature. What happens to pressure as volume increases?

• pressure stays the same

• pressure decreases

• pressure increases

A gas is under 750 mm Hg of pressure. What is the pressure in atm?

1 atm = 760 mm Hg

• 1.013 atm

• 0.987 atm

• 760 atm

• 0.0013 atm

A sample of H2(g) and a sample of N2(g) at the same temperature and pressure contain the same number of molecules. Each sample must have

• the same volume, but a different mass

• the same mass, but a different volume

• both the same volume and the same mass

• neither the same volume nor the same mass