Answer:
P subscript 2 = 4408 - 1520 + 25
P subscript 2 = 4408 - 1545
P subscript 2 = 2863 torr
Partial Pressure for O2 = 2863 torr
Step-by-step 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