2-29. 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 cafe 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, [CP] = 0.8 mg/L, [SOj"] = 14.3 mg/L, [HCO, ] = 189 mg/L, [NO;] = 3.8 mg/L. The pH of the water is 7.3. What is the hardness of this water in mg/L CaCO3?