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I could really use some help, thanks so much in advance!! Just # 45:) What is the partial pressure of Nitrogen in dry air at 31 C and 796mmHg (dry air is 78.0% nitrogen by volume)?
44. A piece of Al is dropped in a large flash of concentrated hydrochloric acid, the gas that come off is collected by water
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Answer #1

Volume of gas is directly proportional to the number of the moles .

Mole fraction of N2 = 78.0/100 = 0.780

Partial pressure of N2 = mole fraction of N2 × total pressure

= 0.780 × 796 mmHg

= 620.88 mmHg

= 621 mmHg. (Answer)

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