Assume that air is 21% and 79% by volume. If the barometric pressure is 740 mm, the partial pressure of is closest to which one of the following [8]

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Assume that air is 21% $O_2$ and 79% $N_2$ by volume. If the barometric pressure is 740 mm, the partial pressure of $O_2$ is closest to which one of the following [8]

Prashant Kotian · Accepted Answer

Correct answer: A. Partial pressure of = mole fraction of * total pressure = 0.21 * 740 mm = 155.4 mm. [8]

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