Understanding the Ideal Gas Law

What is the universal gas constant R in the Ideal Gas Law?

• 0.0821 L atm/mol K

• 1.00 L atm/mol K

• 0.0821 L atm/mol

• 1.00 L atm/mol

Which of the following is NOT a variable in the Ideal Gas Law equation?

• Density

• Volume

• Temperature

• Pressure

If you know the pressure, volume, and temperature of a gas, what can you calculate using the Ideal Gas Law?

• The speed of sound in the gas

• The color of the gas

• The number of moles of the gas

• The density of the gas

What does STP stand for in gas law calculations?

• Standard Temperature and Power

• Standard Time and Pressure

• Standard Time and Power

• Standard Temperature and Pressure

At STP, what is the standard temperature in Kelvin?

• 100 K

• 0 K

• 373 K

• 273 K

How do you convert pressure from torr to atmospheres?

• Divide by 101.3

• Multiply by 101.3

• Divide by 760

• Multiply by 760

In the Ideal Gas Law, what does the variable 'n' represent?

• Number of particles

• Number of molecules

• Number of moles

• Number of atoms

What is the volume occupied by one mole of an ideal gas at STP?

• 20.0 L

• 18.0 L

• 24.0 L

• 22.4 L

Why is the molar volume of a gas at STP considered a special number?

• It changes with pressure

• It changes with temperature

• It is the same for all ideal gases

• It varies with different gases

What happens to the units of pressure, volume, and temperature when using the universal gas constant in calculations?

• They remain unchanged

• They are converted to moles

• They cancel out

• They are doubled