General Chemistry 2: Solubility Product

What are the concentrations of the ionic species in a saturated solution of Ag$_2$CrO$_4$

K$_{sp}$ = 1.1 x 10$^{-12}$

What is the molar solubility of Ag$_2$CrO$_4$ in 0.100 M AgNO$_3$? Compare this to the molar solubility of Ag$_2$CrO$_4$ in water, 1.3 x 10$^{-4}$ M

Ag$_2$CrO$_4$ K$_{sp}$ = 9.0 x 10$^{-12}$

A solution contains 1.0 x 10$^{-4}$ M Cu$^+$ and 2.0 x 10$^{-3}$ M Pb$^{2+}$. When I$^{-}$ is added, which will precipitate first? How much I$^-$ is needed to cause a precipitate to form?When CuI is added to PbI$_2$

CuI K$_{sp}$ = 5.3 x 10$^{-12}$

PbI$_2$ K$_{sp}$ = 1.4 x 10$^{-8}$