A 350 cm3 sample of neon at 150 kPa and 45 ∘C45\text{ }^\circ\text{C}45 ∘C was mixed with 1.35 × 10-2 mol of argon. The gas constant, R=8.31 J K−1 mol−1R = 8.31\text{ J K}^{-1}\text{ mol}^{-1}R=8.31 J K−1 mol−1.
What is the mole fraction of neon in the mixture?
0.400.400.40
0.600.600.60
0.680.680.68
0.910.910.91