11. Solving a chemistry problem

11. Solving a chemistry problem

5. Calculate the total hardness of water if it is known that the content of [CaSO4]=42.81 mg/l, and [Ca(HCO3)2=87.5 mg/l. M(CaSO4)=136.14 g/mol, М(Ca(HCO3)2)=162.11 g/mol. Give your answer to four significant digits.

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