The Nature of Gases

At a constant pressure, the volume decreases.  What happens to the temperature?

• increases
• decreases
• stays the same

At a constant volume, the pressure increases.  What happens to the temperature?

• increases
• decreases
• stays the same

At a constant temperature, the volume decreases.  What happens to the pressure?

• increases
• decreases
• stays the same

The volume of a gas is increased from 150.0 mL to 350.0 mL by heating it. If the original temperature of the gas was 25^oC, what will its final temperature be (in ^oC)

• 146 ^oC
• 10.7 ^oC
• 58.3 ^oC
• 422 ^oC

Tags

NGSS.HS-PS3-1

What is 50 C in Kelvin?

• 223

• 323

• 100

• 50

Absolute zero is

• 0 K

• where there is no molecular movement

• the coldest temperature possible

• all of these

Tags

NGSS.HS-PS3-2

A nitrogen gas has a volume of 600mL at a pressure of 1atm. What volume will the gas occupy at a pressure of 3atm, assuming the temperature remains constant?

• 125mL

• 300mL

• 200mL

• 400mL

A gas sample is a metal cylinder has a pressure of 0.75 atm at 15^oC. What will be the pressure of the gas if the temperature increases to 50^oC?

• 1 atm

• 0.48 atm

• 0.84 atm

• 0.76 atm

How are pressure and volume related?

• Directly

• Indirectly

• They aren't related

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

• Volume will increase

• Volume will decrease

• Volume will not change