Question

Distinguish between molecular mass and molar mass.

Answer 1

MOLAR MASS	MOLECULAR MASS
Refer to mass of a mole of a substance	Refer to the mass of molecules
Also known as molecular weight	It determines the mass of single molecule.
SI unit is g/mol to use in higher calculation	Measured in amu
It is defined as the mass of Avogadro number of atom/molecules or compounds	No particular melting point
Measurement given to compounds, atoms or molecules	Determined only in molecules
Less accurate than molecular mass	Accurate to use in higher calculations
Example: Mass of $1$ mole of oxygen is $15.9994$ grams. Therefore the molar mass $=15.9994g/mol$	Example : Molecular mass of $Ca(OH{)}_2=74$ atomic mass units.

atomic mass units