Answer:
A
mole is the amount of a substance which contains the same number of chemical
units (atoms, molecules or ions) as there are atoms in exactly 12 g of carbon-12.
The unit of mole is given by the symbol 'mol'.
We know that Avogadro number is 6.022 X 1023 Number of
molecules in a certain mass
molecules
where 'W is the mass of the substance in which number of
molecules is to be calculated and 'M' is the molecular mass of the substance.
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