Air is a mixture of many gases. However, in calculatingits \"molar mass\" we nee

Question

Air is a mixture of many gases. However, in calculatingits "molar mass" we need consider only the three major components:nitrogen, oxygen, and argon. Given that one mole of air atsea level is made up of 78.08 percent nitrogen, 20.95 percentoxygen, and 0.97 percent argon, what is the molar mass ofair? Thank you Air is a mixture of many gases. However, in calculatingits "molar mass" we need consider only the three major components:nitrogen, oxygen, and argon. Given that one mole of air atsea level is made up of 78.08 percent nitrogen, 20.95 percentoxygen, and 0.97 percent argon, what is the molar mass ofair? Thank you

Explanation / Answer

molar mass of N2: 28.02       g/mol molar mass of O2: 31.9988    g/mol molar mass of Ar: 39.95        g/mol 0.7808*(28.02 g/mol) + 0.2095*(31.9988 g/mol) + 0.0097*(39.95g/mol) = 28.9692796 g/mol Molar Mass: 28.97 g/mol

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