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Calculate the average molecular weight of air whose main constituents are O2 (21 mol% ) and N2 (79 mol%). What are the compositions of

Calculate the average molecular weight of air whose main constituents are O2 (21 mol% ) and N2 (79 mol%). What are the compositions of these constituents in weight%? Data: Molecular weight of N2 28 %3D Molecular weight of O2 = 32

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