Ideal Gas Law

In the following, what is the unknown variable:

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

• V

• n

• T

What is the correct value for T in the following problem:

What pressure is required to contain 0.023 moles of nitrogen gas in a 4.2 L container at a temperature of 20⁰C?

• T = 0.23 K

• T = 293 K

• T = 4.2⁰C

• T = 20⁰C

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.

• K

• Moles

• kPa

• Pressure

• L

• Temperature

• atm

• Volume

• mol

• Pressure

In order to convert to Kelvin, you add ______ to the Celsius measurement.

• 372

• 273

• 237

• 732

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

• pressure

• volume

• moles

• the gas constant

• temperature

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 in atm 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 Cl₂

• 0.55 mol Cl₂

• 1.45 mol Cl₂

• 0.75 mol Cl₂

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