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If N(1), N(2), N(3)………Are the number of ...

If `N_(1), N_(2), N_(3)`………Are the number of molecules with molecular masses `M_(1), M_(2), M_(3)`…….respectively, then average molecular mass is expressed as

A

`(sumN_i M_i^(2))/(sumN_i M_i)`

B

`(sumN_i M_i)/(sumN_i)`

C

`(sumM_i^(2))/(sum N_i)`

D

`(sumN_i M_i)/(sumM_i)`

Text Solution

Verified by Experts

The correct Answer is:
A
`bar(M_w)= (sum NiMi^(2))/(sumNiMi)`
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