Mathematics, 14.10.2020 16:01, lbelle

A chemistry experiment calls for a 50 ml solution of copper sulfate fawda has 50 ml of 40 solution. how many ml of 70 solution she should add to obtain the needed 50 solution plz quick

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A chemistry experiment calls for a 50 ml solution of copper sulfate fawda has 50 ml of 40 solution....