. What is meant by molecular mass


Best Answer

Explanation:

Molecular mass: It is the sum of the atomic masses of all the atoms present in a molecule of a substance.

So the relative mass of a molecule is expressed as atomic mass units (amu).

Example : Molecular mass of CH4= Atomic mass of C + 4 Atomic mass of H 

Atomic mass of C = 12 ; Atomic mass of H

Molecular mass of CH4= 12 + 4  1= 16

Final Answer:

Molecular mass is the sum of the atomic masses of all the atoms present in a molecule of a substance.

 

 

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