A Mixture of N₂, O₂, and Ar Has Mole Fractions

Multiple Choice

A mixture of N₂, O₂, and Ar has mole fractions of 0.25, 0.65, and 0.10, respectively. What is the pressure of N₂ if the total pressure of the mixture is 3.9 bar?

A) 2.5 bar
B) 0.39 bar
C) 0.67 bar
D) 0.98 bar
E) 1.33 bar