Calculating concentration

When a compound is dissolved in a solvent, the concentration of the compound is usually given in moles per liter (mol/L or mol·L^-1) which is also called molarity, M. To calculate how large a volume, V, of a solution with a known concentration, c, to use in order to obtain a certain number of moles, n, the following equation is used:

The volume in liters is equal to the number of moles divided by the concentration in moles per liter, multiplied by 100 percent.

The equation can be rearranged to isolate for n or c if it should be desired.