4-23 A solution was prepared by dissolving 5.76 g of KCl·MgCl 2 ·6H 2 O (277.85 g/mol) in sufficient water to give 2.000 L. Calculate (a) the molar analytical concentration of KCl·MgCl 2 in this solution. (b) the molar concentration of Mg 2+ (c) the molar concentration of Cl - (d) the weight/volume percentage of KCl·MgCl 2 ·6H 2 O. (e) the number of millimoles of Cl - in 25.0 mL of this solution. (f) ppm K + (g) pMg for the solution. (h) pCl for the solution