The Ksp of PbBr2 is 6.60x10^(-6).What is the molar solubility of PbBr2 in pure water?

The Ksp of PbBr2 is 6.60x10^(-6).What is the molar solubility of PbBr2 in pure water? Whats the molar solubility of PbBr2in 0.500M KBr solution & whats the molar solubility of PbBr2in a 0.500M Pb(NO3)2 solution? Explain