Ideal Gas Law Test

In the ideal gas law, P = ​ (a)   , V = ​ (b)   , n = ​ (c)   ,

R = ​​ (d)   , and T = ​ (e)  

• pressure
• volume
• moles
• gas law constant
• temperature

Match the following units to their names.

• L

• Temperature

• K

• Moles

• mol

• Volume

• mmHg

• Pressure

Solve the following problem:

What is the volume of a balloon if it contains 3.2 moles of helium at a temperature of 20⁰C and 1.2 atm?

• 106.55 K

• 53.3 L

• 293 K

• 64.15 L

Solve the following probem:

What pressure is required to contain 0.23 moles of nitrogen gas in a 4.2 L container at a temperature of 45⁰C?

• 1.43 atm

• 0.048 atm

• 2.49 atm

• 19.32 atm

A gas tank carrying 55L of Cl₂ has a pressure of 2.6atm and a temperature of 289K. How many moles of chlorine gas are in the tank?

• 6.03 mol

• 0.55 mol

• 1.45 mol

• 0.75 mol

We use two R values: 0.0821 and 8.314. How do you know which to use for a problem?

• The units for pressure

• The units for temperature

• The units of volume

• The amount of moles

In the following, what will be the value for R:

What is the volume of a balloon if it contains 3.2 moles of helium at a temperature of 20⁰C and 1.2 atm?

• 0.0821 L⋅atm∕mol⋅K

• 8.314 L⋅kPa∕mol⋅K

• 293 K

• 1.2 atm

Solve the following probem:

What pressure is required to contain 0.23 moles of nitrogen gas in a 4.2 L container at a temperature of 20⁰C?

• 1.32 atm

• 0.048 atm

• 2.49 atm

• 19.32 atm

Choose the correct set of variables to solve the following problem: What is the volume of a balloon if it contains 3.2 moles of helium at a temperature of 20⁰C and 1.2 atm?

• P = x (unknown), V = 3.2 mol, n = 1.2 atm, T = 20⁰C K

• P = 1.2 atm, V = 3.2 mol, n = 20⁰C, T = x (unknown)

• P = 293 K, V = 3.2 mol, n = x (unknown), T = 1.2 atm

• P = 1.2 atm, V = x (unknown), n = 3.2 mol, T = 293 K

What does the variable "n" represent in the ideal gas law?

• pressure

• volume

• moles

• the gas constant

• temperature