A gas cylinder at a pressure of 4408 torr contains a mixture of N2, O2, and helium gases. If the partial pressure of N2 gas is 1520 torr and the partial pressure of helium is 25 torr, what is the partial pressure of O2?

P subscript 2 = 4408 - 1520 + 25

P subscript 2 = 4408 - 1545

P subscript 2 = 2863 torr

Partial Pressure for O2 = 2863 torr

Explanation:

In order to get the partial pressure for O2, you are expected to sum that of N2 and Helium then subtract it from the pressure of the gas cylinder