Formula: c=n/v, n: amount of solute, v: volume of solution (basic formula).
Formula: c concentration v concentration =C dilution v dilution (dilution of a solution with a certain substance concentration: dilution law)
Formula: when the volume of the mixed solution of c1v1+c2v2 = C3 (v1+v2) is constant.
When the volume of mixed solution changes, C 1V 1+C2V2 = C3V3.
(Calculation of mixed amount and concentration solution of different substances)