Question

In a gas mixture, the partial pressures are nitrogen 455 torr , oxygen 130 torr , and helium 240 torr.

What is the total pressure (torr) exerted by the gas mixture?

Answer 1

According to Dalton's law, 

Total pressure for a gas mixture is the sum of partial pressure of individual gases

P(total) = P(O2) + P(N2) + P(He)

    =130 torr + 455 torr + 240 torr

 = 825 torr

Answer

P(total) + 825 torr

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