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Byju's Answer

Standard XIII

Chemistry

Molecular Weight of Polymers

If N1, N2, N3...

Question

If $N_{1}, N_{2}, N_{3}, . . . . . .$ are the number of molecules with molecular masses $M_{1}, M_{2}, M_{3}, . . . . . .$ respectively, the mass average molecular mass is expressed as?

\frac{\sum N_{i} {M_{i}}^{2}}{\sum N_{i} M_{i}}

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\frac{\sum N_{i} M_{i}}{\sum N_{i}}

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\frac{\sum {M_{i}}^{2}}{\sum N_{i}}

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\frac{\sum N_{i} M_{i}}{\sum M_{i}}

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Solution

The correct option is A $\frac{\sum N_{i} {M_{i}}^{2}}{\sum N_{i} M_{i}}$
Mass average molecular mass = $\frac{\sum N_{i} {M_{i}}^{2}}{\sum N_{i} M_{i}}$

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Similar questions

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If N1,N2,N3,...... are the number of molecules with molecular masses M1,M2,M3,...... respectively, the mass average molecular mass is expressed as?

The correct option is A ∑NiMi2∑NiMiMass average molecular mass = ∑NiMi2∑NiMi

If $N_{1}, N_{2}, N_{3}, . . . . . .$ are the number of molecules with molecular masses $M_{1}, M_{2}, M_{3}, . . . . . .$ respectively, the mass average molecular mass is expressed as?

The correct option is A $\frac{\sum N_{i} {M_{i}}^{2}}{\sum N_{i} M_{i}}$
Mass average molecular mass = $\frac{\sum N_{i} {M_{i}}^{2}}{\sum N_{i} M_{i}}$