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Topic: Partial Pressure (Read 67 times)

amiv4

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Partial Pressure

« on: October 10, 2008, 06:03:19 PM »

A gas mixture with a total pressure of 765 mmHg contains each of the following gases at the indicated partial pressures:CO_2, 265 mmHg; Ar, 123 mmHg}; and O_2, 163 mmHg}. The mixture also contains helium gas.

What mass of helium gas is present in a 11.7 L sample of this mixture at 277 K?


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where is this 1

Otis

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Re: Partial Pressure

« Reply #1 on: October 10, 2008, 06:22:07 PM »

Total pressure is equal to the sum of the partial pressures of each gas (Dalton's Law).

So, determine partial pressure of He.

Use PV = nRT

Determine moles of He then mass.

Make sense?

Otis


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