Question

what is mean by mole?

Answer 1

A usually non-cancerous disorder of pigment-producing skin cells commonly called birth marks or moles.

in terms of science
Mole can be defined as a unit which represents 6.023 x1023 particles of same matter. A mole (symbol mol) is defined as the amount of substance that contains as many atoms, molecules, ions, electrons or any other elementary entities as there are carbon atoms in exactly 12 gm of .

Answer 2

the term mole represents 6.023×10^23 entities (atom,molecules, or ions )or one mole is the amount of substance of a system, which contain as many elementary particle as there are in 12g of carbon -12- isotopes . the elementary particle can be atoms, molecules, ion electrons or any other specified particles.