The West Virginia Water Research Institute reported the following water quality measurements for the Monongahela River monitoring station at Mile 89 for August 2010. pH = 7.79 Mg2+ = 10.6 mg/L HCO3- = 59.9 mg/L as CaCO3 Cl- = 15.9 mg/L Nat = 44.7 mg/L S042 = 146 mg/L Ca2+ = 39.8 mg/L (a) Determine the concentration of dissolved inorganic carbon (DIC) in the water in mol/L and in mg/L, assuming that HCO3- is the only significant contributor to DIC. (b) Check the cationanion balance for this analysis. (c) Calculate the ionic strength of the solution. (d) What is the alkalinity in meq/L, if all the alkalinity is contributed by HCO3 ions