Chemistry question....The gases in a mixture have the following partial pressures at the same volume and....?

Question

...temperature: 10.13 kPa nitrogen, 720 mm argon, 1.25 atm of helium, 780 torr oxygen, and 0.92 atm of carbon dioxide. What is the total pressure of the mixture in atm? Any explanation would be helpful too!?!?

Answer 1

1 atm = 760 torr = 760 mm Hg = 101.3 kPa

Convert each gas pressure to atm then add them together.

Answer 2

Convert the grams of H2 and He into moles - you have approximately 0.5 mol H2, and 0.5 mol He. So 50% of your gasoline is H2, and the different 50% is He. this implies that each contributes 50% of the whole rigidity.