What is the paial pressure of oxygen at 760mmHg atmospheric pressure?
The pressure of a gas is propoional to its temperature and the number of moles per volume. P= n/V, where, n= number of moles P= Pressure R = Gas constant T= Absolute temperature V= Volume The pressure exeed by one gas in a mixture of gases is equal to the total pressure times the fraction of the total amount of gas it represents. The paial pressure of oxygen in dry air is therefore 0.21 x 760= 160 mm of Hg at sea level. Ref: Ganong, 23rd Ed, Page 588
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