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27 June, 14:32

A mixture of oxygen, hydrogen, and nitrogen exerts a total pressure of 378 kPa. If the partial pressures of oxygen and hydrogen are 212 kPa and 101 kPa respectively, what is the partial pressure exerted by nitrogen?

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  1. 27 June, 15:20
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    What's the relationship between total and partial pressure? The total pressure is the sum of the parcial pressures!

    So for us, it would be:

    378 = 212+101+x

    where x is the parcial pressure of nitrogen.

    Now we count:

    378 = 212+101+x

    378=313+x

    378-313=x

    65=x

    So the parcial pressure exerted by nitrogen is 65!
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