Molar Mass of a Substance

Definition

The mass (in grams) per mole of its entities (atoms, molecules). It's numerically equal to atomic/molecular weight but expressed in g/mol instead than atomic mass units(u).

Related terms

Mole:

The unit used in chemistry to count entities at the atomic/molecular level.

Atomic Mass:

The mass of an atom, usually expressed in atomic mass units.

Molecular Weight:

The sum of the atomic weights of all atoms in a molecule; it's similar to molar mass but doesn't account for multiple molecules or compounds.