What is the mole fraction of each gas in the mixture?

Question

A mixture of carbon dioxide and hydrogen gases contains carbon dioxide at a partial pressure of 384 mm Hg and hydrogen at a partial pressure of 337 mm Hg.

Answer 1

mole fraction x total pressure = partial pressure

mole fraction = partial pressure / total pressure

Total pressure = 384 mm Hg + 337 mm Hg = 721 mm Hg

mol fraction CO₂ = 384 mm Hg / 721 mm Hg = 0.533

mol fraction H₂ = 337 mm Hg / 721 mm Hg = 0.467