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July 28, 2015

Homework Help: Chemistry (URGENT)

Posted by Ashley on Wednesday, December 15, 2010 at 9:58pm.

A gas mixture with a total pressure of 770 contains each of the following gases at the indicated partial pressures: CO2 , 249mmHg ; , Ar 114mmHg ; and , O2 174mmHg . The mixture also contains helium gas.

1. What is the partial pressure of the helium gas?

2. What mass of helium gas is present in a 11.2 L sample of this mixture at 281 K?

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