Amixture contains 35.07 grams of carbon dioxide, 27.93 grams of water vapor, 12.64 grams of nitrogen, and 5.54 grams of helium. the total pressure of the system is 12 atm, what is the partial pressure of the helium?
a. 0.88 atm
b. 0.82 atm
c. 0.073 atm
d. 0.068 atm

Explanation:

For this question, we must use Dalton's Law of Partial Pressures:

The partial pressure of a gas in a mixture of gases equals its mole fraction times the total pressure:

1. Calculate the number of moles of each gas.

2. Calculate the total moles

3. Calculate the mole fraction of helium

4. Calculate the partial pressure of helium:

the reaction mixture contains some ammonia, plus a lot of unreacted nitrogen and hydrogen. the mixture is cooled and compressed, causing the ammonia gas to condense into a liquid. the liquefied ammonia is separated and removed. the unreacted nitrogen and hydrogen are then recycled back into the reactor .