"http://en.wikipedia.org/wiki/Amount_of_substance_concentration"^^ . "C_B" . . . "\\(C_B = \\frac{n_B}{V}\\), where \\(n_B\\) is the amount of substance \\(B\\) and \\(V\\) is the volume."^^ . . "Amount of Substance of Concentration of B"@en . "http://www.iso.org/iso/catalogue_detail?csnumber=31894"^^ . . "\"Amount of Substance of Concentration of B\" is defined as the amount of a constituent divided by the volume of the mixture." .