Common Ion

Calculate the equilibrium concentration of Pb##^{2+}##, I##^-##, Na(\^+##, and NO##_3^-## when 100.0 mL of 0.0500 M Pb(NO##_3##)##_2## and 200.0 mL of 0.100 M NaI are mixed.
PbI##_2## K##_{sp}## = 1.4 x 10##^{-8}##