Use Fig. 9.3 to find (a) the molality at which (b) the partial molar volume of MgSO4(aq) i...

Use Fig. 9.3 to find (a) the molality at which

(b) the partial molar volume of MgSO4(aq) in the limit of an infinitely dilute solution; (c) of MgSO4 and  of H2O in a 0.05 mol/kg MgSO4(aq) solution.