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Lesson 9 answer
The answer to lesson 9 part 1: Na and SO4 are the spectator ions and CuCl2 is the precipitate. 2Na+(aq) + 2Cl−(aq) + Cu2+(aq) + SO42−(aq) → 2Na+(aq) + SO42−(aq) + CuCl2 (s)