Does a Chem major wanna help me please???????????????????????

Question

Could you tell me how to do this Chemistry problem? Total/Partial Pressures?



In a gas mixture, the partial pressures are argon 415 mm Hg, neon 75 mm Hg, and nitrogen 125 mm Hg. What is the total pressure (atm) exerted by the gas mixture?

Answer 1

Just add up the partial pressures: 415 +75 + 125 = 615 mm Hg. Then to convert by atm, remember 1 atm = 760 mm Hg, so we have 615/760 = 0.82 atm.

Answer 2

Pt = 415 mmHg + 75 mmHg + 125 mmHg = 615mmHg = 0.809 atm

1 atm = 760 mmHg
615/760 = 0.809atm