Question

what is atomic and molecular mass​

Answer 1

The atomic mass is the mass of an atom. Its unit is the unified atomic mass units where 1 unified atomic mass unit is defined as ¹⁄₁₂ of the mass of a single carbon-12 atom, at rest.

Relative molecular mass or molecular weight is the mass of a molecule. It is calculated as the sum of the relative atomic masses of each constituent element multiplied by the number of atoms of that element in the molecular formul

Answer 2

atomic mass -the mass of an atomic an element .It is equal to number of protons

and neutrons

molecular mass-the weight of the molecule is called molecular mass