Atomic mass|Molecular mass| Molar mass| Class 9| CBSE

Atomic mass : The mass of a single atom of an element, expressed in atomic mass units (amu).
Molecular mass : The sum of the atomic masses of all atoms in a molecule, expressed in amu.
Formula unit mass : The sum of the atomic masses of all atoms in a formula unit of an ionic compound, expressed in amu.
Molar mass : The mass of one mole of a substance, expressed in grams per mole (g/mol).
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