Author Question: In a gas mixture of He, Ne, and Ar with a total pressure of 8.40 atm, the mole fraction of Ar is ... (Read 145 times)

tsand2 · **on:** Aug 27, 2018

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) 0.179
B) 0.238
C) 0.357
D) 0.583
E) 0.417

Question 2

With which of the following will the Potassium ion form an insoluble salt?

A) Phosphate
B) Sulfate
C) Sulfide
D) Iodide
E) Potassium will form soluble salts with all choices.