Solubility and Precipitation Practice Test

Consider the following balanced equation for the solubility of barium hydroxide in an aqueous solution.

$\small $Ba(OH)_{2}$_{(s)} \rightleftharpoons $Ba^${2+}$_{(aq)}$ + $2OH^${-}$_{(aq)}$$

$\small $K_{sp}$ = $5*10^{-3}$$

What is the solubility of barium hydroxide?

How many moles of fluoride ions are present in of a completely saturated solution of lead (II) fluoride?

$PbF_2(s)\rightarrow $Pb^{2+}$(aq)+2F^-(aq)$

$K_${sp}=3.7*10^{-8}$$