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In ordinary dry air at zero Celsius at sea level the partial pressure of oxygen is about 159.6 torr.

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13y ago
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6mo ago

The partial pressure of a gas in a mixture is equal to the total pressure of the mixture multiplied by the mole fraction of that gas. Since the mole fraction of O2 in air is 0.2084 and the total pressure of air is approximately 1 atmosphere, the partial pressure of O2 in air is approximately 0.2084 atmosphere.

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Q: What is the partial pressure of 20.84 percent of O2 in air?
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