Please don't copy and paste the answer from other similar posts. Thank you.

For each of these four water samples, (1) calculate meq/L for each chemical element in each table, (2) draw bar chart (Text p.302 Fig. 10.13 as example), (3) using the bar chart to determine alkalinity, calcium Ca2+ hardness, magnesium Mg2+ hardness, total hardness, carbonate hardness, noncarbonate hardness, report in both meq/L and in mg/L as CaCO3. Water Sample #1 Cations Ca2+ Mg2+ mg/L 53.0 12.1 12.3 9.2 196.3 Anions HCO3- SO42- C1- mg/L 285.0 134.0 73.5 Nat Fe2+ K+ Water Sample #2 Cations Ca2+ mg/L 53.0 12.1 12.3 9.2 75.5 Anions HCO3- SO42- Cl mg/L 134.0 104.0 73.5 Mg2+ Na+ Fe2+ K+ mg/L 135 Water Sample #3 Cations Ca2+ Mg2+ Na+ K+ mg/L 94 28 14 44 Anions HCO3- SO42- CI 134 132.8 Water Sample #4 Cations Ca2+ Mg2+ Sr2+ Na+ K+ mg/L 12 15 3.5 15 15 Anions HCO3- SO42- CI NO3 mg/L 75 41 25 10