Chapter 17, Problem 60RQ

What is the molar solubility of $\text{Mg}{\left(\text{OH}\right)}_{\text{2}}$ in (a) 0.20 M NaOH and (b) $\text{0}\text{.20 }M{\text{ MgSO}}_{\text{4}}$? For $\text{Mg}{\left(\text{OH}\right)}_{\text{2}}\text{,}{K}_{\text{sp}}\text{= 5}\text{.6 }\times {\text{ 10}}^{\text{-12}}$.