1. Must figure out the empirical forms of each the compounds:
Lead(II) nitrate = Pb(NO3)2
Potassium iodide = KI
Lead(II) iodide = PbI2
Potassium nitrate = KNO3
2. Then set up a balanced equation:
Pb(NO3)2 + 2KI ----> PbI2 + 2KNO2
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