Question

Define mole concept urgent

Answer 1

The mole is the same sort of quantity as a dozen, a Bakers’ dozen, or a Botany Bay dozen. And so a mole is a chemists’ dozen, Avogadro’s number. Why is Avogadro’s number used, an absurdly large number? Because it is the number of carbon atoms in 12 g of such atoms. And thus the mole is the link between the micro-world of atoms and molecules to the macro world of grams and litres. The periodic table routinely lists the molar mass of the 100 or so elements. And so it DIRECTLY informs our ideas of stoichiometry, and chemical equivalence

Answer 2

The mole is the amount of a substance of a system which contains as many elementary entities as there are atoms in 0.012 kilogram of carbon-12; its symbol is "mol." When the mole is used, the elementary entities must be specified and may be atoms, molecules, ions, electrons, other particles, or specified group of such particles.