1-4. A sample of water having a pH of 7.2 has the following concentrations of ions: Ca2+ 40 mg/L Mg+ 10 mg/L Na 11.8 mg/L K+ 7.0 mg/L Construct a bar chart of the ions in term of mg/L CaCO3 Calculate HCO3 110 mg/L SO4267.2 mg/L Cl- 11 mg/L 1. Calculate total hardness (TH) as mg/L CaCO3 2. Calculate carbonate hardness (CH) as mg/L CaCO3 3. Calculate noncarbonate hardness (NCH) as mg/L CaCO3 4. Calculate alkalinity mg/L CaCO3