Question

A metal tank contains three gases:  oxygen, helium, and nitrogen.  If the partial pressures of the three gases in the tank are 35 atm of O2, 5 atm of N2, and 25 atm of He, what is the total pressure inside of the tank?

Answer 1

The total pressure is equal to the sum of partial pressures of each component.

$P_{total}=P_{O_2}+P_{N_2}+P_{He}=35atm+5atm+25atm=65atm$

Answer: 65 atm