In the titration of 2500 ml of a water sample it took 19790, Ask an Expert

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In the titration of 25.00 ml of a water sample, it took 19.790 ml of 3.630x10-3 M EDTA solution to reach the endpoint. Complete the questions below:

The total hardness is due to one or a combination of Ca2+, Mg2+, and Fe2+ in your sample. It is convenient to express this hardness as though it was entirely due to Ca2+. Making this assumption, determine the number of moles of Ca2+ present in the bottled water sample titrated. (enter your answer with 3 significant figures)

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