In a mixture of Cl2 and O2 gases, the partial pressure of Cl2 is 0.115 atm. The total pressure is 0.325 atm. T

Answer 1

You have not finished your question. I suppose you want the partial pressure of O2
you have pO2+ pCl2 =0.325
pO2 = 0.325-0.115 = 0.210 atm