3. If the components of air are N2, 75%; O2, 24%; Ar, 0-9% and CO2, 0-1% by volume, what would be the molecular weight o
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3. If the components of air are N2, 75%; O2, 24%; Ar, 0-9% and CO2, 0-1% by volume, what would be the molecular weight o
3. If the components of air are N2, 75%; O2, 24%; Ar, 0-9% andCO2, 0-1% by volume, what would be the molecular weight of air?