A mixture of He, N2, and Ar has a pressure of 22.1 atm at 28.0 °C. If the partial pressure of He is 1555 torr and that of Ar is 2731 mm Hg, what is the partial pressure of N2?

Question

jfraser · Answer

each gas in the mixture makes its own partial pressure, and the 3 partial pressures $must$ add up to the total pressure.

First you have to convert the pressures so that all 4 (the three gases + the total pressure) are in the same unit

anonymous · Answer

im still so confused. but thanks for trying to help. @JFraser

jfraser · Answer

torr, mmHg, and atm, are all three different ways of measuring pressure. You need to convert them all into the same unit so you can compare them appropriately.

Use conversion fractions

1atm = 760mmHg