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Q1: Will a precipitate form if 45cm3 of 0.0035M NaI is added to 95cm3 of 0.0013M Pb(NO3)2? The Ksp of PbI2 is 7.08 x 10^-9.

My teacher says the answer's no precipitate and the trial Ksp is 8.8 x10^-10. But I got 1.1 x 10^-9. Can someone show me how to do this?