Question

What is the correct definition of a mole?

Answer 1

Mole

• The mole, symbol mol, is the SI unit of the amount of substance.
• The amount of a substance that contains the same number of elementary particles(ions, molecules, or atoms) as the number of atoms present in $12\mathrm{g}$ of carbon$\left({\mathrm{C}}^{12}\right)$ is called the mole.
• One mole of a substance contains $6.022\times {10}^{23}$ elementary entities.

Formula for mole

$\text{Number of moles=}\frac{\text{Mass of substance}\left(\text{g}\right)}{\text{Molar mass}}$