In a gas mixture of He, Ne, and Ar with a total pressure of 8.40 ...

[tsand2]

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.

[harveenkau8139]

Answer to Question 1

D

Answer to Question 2

E

[tsand2]

Gracias!

[aruss1303]

Excellent