12. The following sentences state the essence of some important/useful equations developed and used in analytical chemistry. In each of the blanks of the following question, fill, in English, one word only from the list below so as to best complete the sentence that concisely reveals the analytical chemistry concepts behind the equations. Only the singular noun of the possible

answer is provided in the list. (11%)

error, matrix, mass, sensitivity, pH, variance, molarity, size, balance, limit, aliquot, population, equilibrium, elution,diffusion, formal, activity, rate, buoyant, Iaboratory, trace, Beer, detection, charge, potential, buffer, reduction, oxidation,suspension, solute.