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23 January, 11:03

A gas mixture with a total pressure of 770 mmHg contains each of the following gases at the indicated partial pressures: 128 mmHg CO2, 232 mmHg Ar, and 183 mmHg O2. The mixture also contains helium gas. What is the partial pressure of the helium gas?

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  1. 23 January, 12:41
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    227 mmHg

    Explanation:

    Ptotal = PCO2 + PAr+PO2+PHe

    PHe = Ptotal-PCO2 - PAr-PO2

    PHe = (770 mmHg) - (128 mmHg) - (232 mmHg) - (183 mmHg)

    PHe=227 mmHg
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