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At 30 °C the Ksp of PbI2 is 3.2 x 10^-8. What is the molar solubility? (hint, to make this math you can do in your head, 3.2 x 10^-8 is 32 x 10^-9. a) 1.4 x 10^-5 b) 9 x 10^-5 c) 4 x 10^-3 d) 2 x 10^-3