A mole (symbol: n) is a unit used in chemistry to express amounts of a chemical substance. One mole is defined as exactly 6.02214076 × 10²³ elementary entities (like atoms, molecules, or ions) of a substance.
1. Using mass and molar mass:
n (mol) = Mass (g) ÷ Molar mass (g/mol)
2. Using concentration and volume:
n (mol) = Concentration (mol/L) × Volume (L)