a liter of solution contains 0140 M Ca2 and 0140 M Pb2 They

a liter of solution contains 0.140 M Ca+2 and 0.140 M Pb+2. They are to be seperated using chromate (CrO4-2) to selectively precipitate out one metal. (A) Which metal precipitates out first and (B) how much of it will be left in solution when the second metal starts to precipitate out? (c) What percent of the first metal is precipitated out?

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