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A Mole is: The Mole •6.02 x 1023 of anything. •The formula mass in grams of a substance contains one mole of particles. •Na = Avogadro's Number = 6.02 x 1023 Spreading a "mole" of marbles over the entire surface of the earth would produce a layer about three miles thick.
Important mole conversion factors:
1 mole = 6.02 x 1023 particles = formula mass in grams
Mole is the measurement in chemistry. It is used to express the amount of a chemical substance.
One mole is defined as the amount of substance of a system which contains as many entities like, atoms, molecules and ions as there are atoms in 12 grams of carbon - 12".
:  The number of the particles present in one mole of any substance is equal to 6.022x1023. This is called avogadro’s number or avogadro’s constant.