Gas Law Review

When gas molecules collide into the container walls, they create this.

Pressure

Which of the following is a unit of pressure?

atmospheres (atm)

How are temperature and pressure related?

When temperature increases, pressure increases.

A balloon with a volume of 7.5 L at 300 kPa expands to 10.5 L. What is the new pressure at constant T?

214kPa

Which of the following set of values define STP?

0°C and 1 atm

What mass of H₂ is required to produce 4.70 L of H₂O gas at STP?

0.42g

Calculate the volume 2.0 mol N₂ gas would occupy at STP.

28L

A 25 L sample of nitrous oxide at 63°C is cooled to 30°C at constant pressure. What happens to the volume?

less than 25L

Which of the following is a unit of volume?

liters

A gas occupies 4.0 L at 30°C. What space would it occupy at 60°C?

8.0L

A sealed 2.0 L tube contains 1 mol N₂. An equal amount of O₂ is added at constant T and V. What happens to the pressure?

The pressure will increase.

The kinetic energy of gas molecules is similar to the ______ of the gas.

Temperature

What value is used to convert from Celsius to Kelvin?

273

What is the lowest possible temperature according to science?

0 K

Which of the following is a unit of temperature?

Kelvin

A gas at 0°C and 1.0 atm is heated to 100°C at constant volume. What is the new pressure?

1.4atm

A gas at 4.0 L and 2 atm changes to 2.5 L. What is the new pressure?

2.5atm

Convert 50°C to Kelvin.

323 K

What occurs at absolute zero?

All molecular motion stops.

Convert 420 K to °C.

147°C

A gas at STP in a 3 L balloon is heated to 27°C and 0.65 atm. What is the new volume?

4.7L

Moles of N₂ needed to produce 0.65 L NO₂ at 100°C and 105 kPa?

0.022 moles

A scuba tank has 2 mol O₂ and 3.5 mol N₂, total pressure 32 atm. Partial pressure of O₂?

13.94 atm