AP Chemistry: Ideal Gas Law Quiz

What does the variable 'n' represent in the Ideal Gas Law equation PV = nRT?

• Number of moles of gas

• Temperature of gas

• Pressure of gas

• Volume of gas

Why is it important to use specific units for each variable in the Ideal Gas Law?

• To make calculations easier

• To avoid using a calculator

• To ensure the equation balances

• To match the units of the universal gas constant

What is the universal gas constant value used in the examples?

• 0.083 liter atmospheres per mole Kelvin

• 0.081 liter atmospheres per mole Kelvin

• 0.08206 liter atmospheres per mole Kelvin

• 0.0821 liter atmospheres per mole Kelvin

In the example problem, what is the final pressure of nitrogen gas in the container?

• 300 atmospheres

• 200 atmospheres

• 100 atmospheres

• 400 atmospheres

How many moles of nitrogen gas are in the container according to the example problem?

• 162 moles

• 200 moles

• 300 moles

• 100 moles

What is the first step in solving the volume of oxygen gas in the example problem?

• Calculate pressure

• Find the universal gas constant

• Convert grams to moles

• Convert Celsius to Kelvin

What is the volume of oxygen gas calculated in the example problem?

• 17.6 liters

• 21.6 liters

• 19.6 liters

• 15.6 liters

In the density calculation example, what is the molar mass of O2 used?

• 16.00 grams per mole

• 32.00 grams per mole

• 44.00 grams per mole

• 28.00 grams per mole

How is density expressed in the context of the Ideal Gas Law?

• Moles per liter

• Grams per liter

• Liters per gram

• Atmospheres per liter

What is the calculated density of oxygen gas in the example problem?

• 1.51 grams per liter

• 1.41 grams per liter

• 1.31 grams per liter

• 1.21 grams per liter