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A gas mixture contains each of the following gases at the indicated partial pressures: N2, 211...

A gas mixture contains each of the following gases at the indicated partial pressures: N2, 211 torr ; O2, 135 torr ; and He, 129 torr .

What mass of each gas is present in a 1.35 −L sample of this mixture at 25.0 ∘C?

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