Question

What is meant by a mole of a substance?

Answer 1

The mole (mol) is the unit of measurement for the amount of substance in the International System of Units (SI). A mole of a substance or a mole of particles is defined as exactly $6.022\times {10}^{23}$ particles, which may be atoms, molecules, ions, or electrons.

A mole of carbon atoms $=6.022\times {10}^{23}$ carbon atoms.