Assume that air contains 78 percent n2 21 percent o2 and 1, Ask an Expert

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To determine the number of molecules present in air using the ideal gas law and Avogadro's number.

Assume that air contains 78 percent N2, 21 percent O2, and 1 percent Ar, all by colume, how many molecules of each type of gas are present in 1.0 L of air at STP?

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