by • 10/09/2013 • GeneralComments (0)616


If atomic mass or molecular mass of a substance is represented in grams then it is called 1 mole of that substance.


The gram atomic or gram molecular or gram formula mass of a substance that contains Avogadro’s number of particles is called mole. For Example:

A mole of Mg atom = 24 gm

A mole of C atom = 12 gm

A mole of H2S04 = 98 gms


Mathematical Form:

No. of Mass =

Mass in gm

At. Mass or Mol mass



It is measured in volume.

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