Gas Laws and Partial Pressures Quiz

What is the total mass of gas in the container?

• 2.5 kg

• 2.1 kg

• 3.0 kg

• 1.5 kg

What percentage of the total gas mass is made up of nitrogen?

• 30.48%

• 2.86%

• 66.67%

• 50.00%

How many moles of nitrogen are present in the container?

• 20 moles

• 30 moles

• 50 moles

• 40 moles

Why are moles more important than mass when calculating pressure?

• Because mass is irrelevant in gas calculations

• Because moles are a unit of pressure

• Because pressure depends on the number of particles, not mass

• Because moles are easier to measure

What is the value of the gas constant 'R' used in the calculation?

• 8.2057 liters atm per mole Kelvin

• 8.3145 meters cubed Pascals per mole Kelvin

• 0.0821 liters atm per mole Kelvin

• 1.987 calories per mole Kelvin

What is the total pressure in the container in Pascals?

• 56,746 Pascals

• 101,325 Pascals

• 75,000 Pascals

• 50,000 Pascals

What is the partial pressure of nitrogen in atmospheres?

• 0.168 atmospheres

• 0.112 atmospheres

• 0.56 atmospheres

• 0.28 atmospheres

What percentage of the total molecules are hydrogen?

• 66.67%

• 20%

• 50%

• 30%

How does the kinetic energy of hydrogen compare to that of nitrogen and oxygen?

• Hydrogen's kinetic energy is irrelevant

• Hydrogen has more kinetic energy

• Hydrogen has less kinetic energy

• Hydrogen has the same kinetic energy

What is the sum of the partial pressures of all gases in atmospheres?

• 1.00 atmospheres

• 0.28 atmospheres

• 0.56 atmospheres

• 0.84 atmospheres