A Sealed Glass Container Contains Partial Pressures of 0

A sealed glass container contains partial pressures of 0.24 atm O₂ gas and 0.46 atm H₂ gas. What is the mole fraction of H₂ in the glass container?

A) 0.70
B) 0.24
C) 0.46
D) 0.66
E) 0.34