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                       1 mole = 6.022 × 10  particles = Mass of 1 mole particles in grams
               The mass of 1 mole particles is equal to its mass in grams.
                       1 mole atoms = gram atomic mass
                       1 mole molecules = gram molecular mass
               Avogadro’s constant or Avogadro’s number:
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                        The number of particles present in one mole (i.e. 6.022 x 10  particles) is called
               Avogadro’s number or Avogadro’s constant and is often denoted by the symbol ‘N A’.
               Molar Mass (M): The molar mass of a substance is the mass of one mole of it. It is
               expressed in terms of grams per mole.
               .































































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