Question

what is mole? explain it

Answer 1

Mole (unit) Mole is the SI unit of measurement used to measure the number of things, usually atoms or molecules. One mole of something is equal to Avogadro's number. ... Scientists use this number because it is the number of carbon atoms in 12 grams of carbon-12, which is the most common kind of carbon.

Answer 2

The mole is the unit of measurement for amount of substance in the International systems of unit.  One mole of pure 12C has a mass of exactly 12 g.