Molar concentration

The concentration of a chemical substance or compound in a solution is often given in moles per liter, or mol/L. This is also called the molarity, and you will therefore often see M used instead of mol/L.

The molarity is found by dividing the amount in moles with the volume in a liter of the solution:

C = n / V

where C is the molarity or molar concentration, n is the amount in moles, and V is the volume in liters.