posted by Jane .
A gas mixture contains oxygen and argon at partial pressures of 0.60 atm and 425 mmhg. If nitrogen gas added to the sample increases the total pressure to 1250 torr, what is the partial pressure in torr?
What's the partial pressure in torr OF WHAT? nitrogen?
PAr + PO2 + PN2 = total pressure
Solve for PN2.