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Dalton's Law of Partial Pressures

A mixture of ...

Question

A mixture of gases in a cylinder at 760 $m m$ pressure contains 65% nitrogen, 15% oxygen, and 20% carbon dioxide by volume. What is the partial pressure of oxygen gas in $m m$ ?

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Solution

According to
Dalton's law of partial pressure
$P_{O_{2}} = \frac{760 \times 15}{100} = 114 m m$

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