Molar Flow Rates and Gas Laws

The video tutorial explains how to use the ideal gas law to calculate the mole percent of CO2 in a product stream. It begins with an introduction to the problem, followed by calculating the molar mass of air, using given data for CO2, and applying the ideal gas law. The final section involves calculating the mole percent of CO2 in the product stream, resulting in a final answer of 70.49%.

What is the composition of the air stream in terms of mole percent?

• 100% oxygen

• 79% oxygen and 21% nitrogen

• 50% oxygen and 50% nitrogen

• 21% oxygen and 79% nitrogen

How is the molar mass of air calculated?

• By using only the molecular weight of oxygen

• By averaging the molecular weights of oxygen and nitrogen based on their mole percent

• By adding the molecular weights of oxygen and nitrogen

• By using only the molecular weight of nitrogen

What is the molar mass of air calculated in the video?

• 79 grams per mole

• 28.86 grams per mole

• 28.02 grams per mole

• 32 grams per mole

How is the molar flow rate of air determined?

• By multiplying the mass flow rate by the molar mass

• By adding the mass flow rate and molar mass

• By dividing the mass flow rate by the molar mass

• By subtracting the molar mass from the mass flow rate

What is the molar flow rate of air in kilomoles per hour?

• 3.0 kilomoles per hour

• 0.8663 kilomoles per hour

• 2.069 kilomoles per hour

• 1.5 kilomoles per hour

Which law is used to calculate the molar flow rate of CO2?

• Avogadro's Law

• Charles's Law

• Ideal Gas Law

• Boyle's Law

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

• 1.987 calories per mole per K

• 0.0821 liters times atm divided by moles times K

• 6.022 x 10^23 molecules per mole

• 8.314 meters cubed times kiloPascals divided by kilomoles times K

What is the molar flow rate of CO2 calculated in the video?

• 3.0 kilomoles per hour

• 1.5 kilomoles per hour

• 2.069 kilomoles per hour

• 0.8663 kilomoles per hour

How is the mole percent of CO2 in the product stream calculated?

• By dividing the molar flow rate of CO2 by the total molar flow rate and multiplying by 100

• By subtracting the molar flow rate of air from CO2

• By multiplying the molar flow rates of CO2 and air

• By adding the molar flow rates of CO2 and air

What is the final mole percent of CO2 in the product stream?

• 100%

• 50%

• 21%

• 70.49%