In a gas mixture of He, Ne, and Ar with a total pressure of

Last updated: 7/30/2022

In a gas mixture of He, Ne, and Ar with a total pressure of 8.40 atm, the mole fraction of Ar is ___ if the partial pressures of He and Ne are 1.50 and 2.00 atm, respectively. A) 0.48 B) 0.58 C) 0.68 D) 0.78 E) 0.88