Question: A water sample has the following simplified composition (all concentrations in mg/L as the ion): (Ca 2+ ) = 70.0 mg/L (Na + ) =

A water sample has the following simplified composition (all concentrations in mg/L as the ion):

(Ca2+) = 70.0 mg/L

(Na+) = 10.0 mg/L

(HCO3-) = 240.0 mg/L

For this water, calculate a) the total hardness, b) the carbonate hardness, and c) the noncarbonatehardness in mg/L as CaCO3.

A.W.: Ca 40; Na 23; C 12; O 16; H 1

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