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OpenStudy (anonymous):
A gas mixture with a total pressure of 746 mmHg contains each of the following gases at the indicated partial pressures: CO2, 122 mmHg; Ar, 202 mmHg; and O2, 183 mmHg. The mixture also contains helium gas. What is the partial pressure of the helium gas? mmHg What mass of helium gas is present in a 11.5-L sample of this mixture at 274 K?
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OpenStudy (anonymous):
so I have 239mmHg so far
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