1.

If`N_(1),N_(2),N_(3),……`are the number of molcules with molecular masses `M_(1),M_(2),(M_(3),…`respectively ,then mass average molar mass is expressed as:A. `(SigmaNiMi^(2))/(SigmaNiMi)`B. `(SigmaNiMi)/(SigmaNi)`C. `(SigmaMi^(2))/(SigmaNi)`D. `(SigmaNiMi)/(SigmaMi)`

Answer» Correct Answer - A


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