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Since the density of water is 1.0 g/mL, one ppm would be the sameĪs the number of mg of CaCO3 per liter of water.ĭetermine the number of moles of CaCO3 present inĬalculate the number of grams of CaCO3 present andĬonvert the number of mL of water sample used in each titrationġ week, 2 days ago A General Chemistry student performed the “Determination of The total hardness is always listed in parts-per-million (ppm) of The total hardness is due to one or a combination ofĮxpress this hardness as though it was entirely due toĬa2+. Hardness of a Water Sample” lab and obtained the followingĬalculate the average of the volume of EDTA used in mLĬalculate the number of moles of EDTA solution required to SOLVED:A General Chemistry student performed the “Determination of