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Question: while visiting zagreb croatia mr arthur van de lay visits...

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While visiting Zagreb, Croatia, Mr. Arthur Van de Lay visits the Mimara Art Museum and then takes in the great architecture of the city. He stops at a café in the old town and orders a bottle of mineral water. The reported chemical concentration of this water is: [Na+] = 0.65 mg/L, [K+] = 0.4 mg/L, [Mg2+] = 19 mg/L, [Ca2+] = 35 mg/L, [Cl-] = 0.8 mg/L, [SO42-] = 14.3 mg/L, [HCO3-] = 189 mg/L, [NO3-] = 3.8 mg/L. The pH of the water is 7.3. (a) What is the hardness of the water in mg/L CaCO3?

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