Question: Problem 2-5 points Typically, it is assumed that air is 21% O2 and 79% N2 by moles. Calculate the percentage by mass and by volume

Problem 2-5 points Typically, it is assumed that air is 21% O2 and 79% N2 by moles. Calculate the percentage by mass and by volume (assume a density of 1.42919/L and 1.251 g/L for O2 and N2, respectively)

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