Gas Laws and Problems

A gas that has a pressure of 2 atm and a volume of 10 L.  What would be the new volume if the pressure was changed to 1 atm? Choose the correct formula to solve the problem.

• P₁/T₁ = P₂/T₂

• P₁V₁ = P₂V₂

• V₁/n₁ = V₂/n₂

• PV = nRT

A sample of a gas has a volume of 852 mL at 298 K. What temperature is necessary for the gas to have a volume of 945 mL? Choose the formula you would use to solve the problem.

• P_t = P₁ + P₂ + P₃ + ...

• P₁V₁ = P₂V₂

• V₁/T₁ = V₂/T₂

• P₁V₁/T₁ = P₂V₂/T₂

A sample of a gas has a volume of 852 mL at 298 K. What temperature is necessary for the gas to have a volume of 945 mL? Choose the formula used to solve the problem.

• P_t = P₁ + P₂ + P₃ + ...

• P₁V₁ = P₂V₂

• V₁/T₁ = V₂/T₂

• P₁V₁/T₁ = P₂V₂/T₂

If a nitrogen gas occupies a volume of 500 ml at a pressure of 0.971atm. What volume will the gas occupy at a pressure of 1.50 atm?  

• P₁V₁ = P₂V₂

• PV = nRT
• P₁/T₁ = P₂/T₂

• V₁/n₁ = V₂/n₂

Determine the number of moles in a container of gas at STP with a volume of 99.2 L.  Which formula is used?

• V₁/n₁ = V₂/n₂

• PV = nRT
• P₁V₁ = P₂V₂

• V₁/T₁ = V₂/T₂

A sample of gas with a volume of 30.0 mL at 25.0^oC is heated to 50.0^oC.  What is the new volume of the gas? Which formula would be used?

• P₁V₁ = P₂V₂

• P₁/T₁ = P₂/T₂

• PV = nRT
• V₁/T₁ = V₂/T₂

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

At STP (Standard Temperature and Pressure), a gas has a volume of
3.0 L. What is the new volume if the pressure increases to 3.0 atm.

• 9.0 L
• 1.0 L
• 9.0 atm

• 1.0 atm