Question

In a mixture of oxygen and nitrogen gas, `80.0%` of the total gas pressure is exerted by the nitrogen. If the total pressure is `"2.0 atm"`, what pressure does the oxygen exert?

Answer 1

`"0.4 atm"`

Explanation:

`80%`of pressure is exerted by nitrogen gas. So, `20%`of pressure will be exerted by oxygen gas.

`"p"_("O"_2) = 20% "of 2 atm" = 20/100 × "2 atm" = "0.4 atm"`