A Sealed Glass Container Contains 0

A sealed glass container contains 0.2 moles of O₂ gas and 0.3 moles of N₂ gas. If the total pressure inside the container is 0.75 atm what is the partial pressure of O₂ in the glass container?

A) 0.20 atm
B) 0.30 atm
C) 0.50 atm
D) 0.75 atm
E) 0.45 atm