The Avogadro number is defined as the number of representative particles
(atoms, ions, molecules) present in one mole of a substance.
Avogadro number is represented by NA.
It has a fixed value of
Uses Of Avogadro's number:
(1) It is used to calculate the number of atoms
or molecules in a given sample of substance.
(2) It is used to calculate the mass of single
atom or molecule of a substance.
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