Question

What is molecular mass ?

Answer 1

Molecular mass is the mass of a molecule. It is equal to the sum of atomic weights of all the constituent atoms of the molecule. It tells how many times a molecule is heavies than 1/12th of a carbon - 12 atom. 

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Answer 2

Hello Deepu,

Molecular mass is defined as the sum of the masses of the atoms that constitute the given substance.

hope it helps u......