If`N_(1),N_(2),N_(3),……`are the number of molcules with molecular – InterviewSolution

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. `(SigmaN_(i)M_(i)^(2))/(SigmaN_(i)M_(i))`B. `(SigmaN_(i)M_(i))/(SigmaN_(i))`C. `(SigmaM_(i)^(2)/(SigmaN_(i)`D. `(SigmaN_(i)M_(i))/(SigmaM_(i)`
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