Question

What's the difference between formula mass and molecular mass?

Answer 1

Formula mass is defined as the sum of atomic mass of the icons present in the formula unit of an iconic compound.

Molecular mass is a sum of atomic of the atoms in an molecular.

Answer 2

Explanation:

Formula Mass:

1. Formula mass is defined as the sum of atomic masses of the ions present in the formula unit of an ionic compound.
2. Formula mass is more general term than molecular mass and maybe used in referring to all compounds.

Molecular Mass:

1. Molecular mass is the sum of the atomic masses of the atoms in a molecule.