Section Quiz: Gases and Pressure

What causes a gas to exert pressure?

• collisions

• density

• temperature

• elevation

The SI unit for pressure is

• newton

• mm Hg

• pascal

• liter

The pressure exerted by a gas does not depend on

• temperature

• volume

• number of moles present

• the identity of the gas

At sea level, the average height of mercury in a barometer is

• 760 mm

• 101 325 atm

• 1.01 325 Pa

• All of the above

Standard temperature and pressure are

• 32°F and 10 atm.

• 0°C and 1 atm.

• 10 K and 1 atm.

• 0°F and 1 atm.

Which of the following is not a unit of pressure?

• torr

• pascal

• newton

• atmosphere

A pressure of 760.0 mm Hg is equal to

• 1.000 atm.

• 10.00 atm.

• 100.0 atm.

• 7.600 atm.

A pressure of 20 torr is equal to

• 133.322 Pa.

• 20 Pa.

• 20 mm Hg.

• 1 mm Hg.

Who developed the concept that the total pressure of a mixture of gases is the sum of their partial pressures?

• Charles

• Boyle

• Dalton

• Kelvin

Gases collected by water displacement contain

• H₂O(g)

• H₂O(l)

• H₂O(s) and H₂O(l)

• H₂O(l) and H₂O(g)