What is the term used to describe the reagent that we DO know the concentration of?

in theory, limestone is composed principally of the compound calcium carbonate - caco3, but in reality this compound is deposited in conditions involving a number of other compounds as impurities so it ends up being a mixture of many compounds.

hope this : -)

tony (lordcaos066)

answer; /// i do believe that the correct answer is (c)nuclear bond