question 22 poine iron ii sulfate rcacts with potassium hydroxidc in aqueous solution to form precipitate tbe nct ionic cquation for this rcaction is slo 5 qucstion 2 fe 2 aq s04 2 aq feso4 03693

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A thin strip of iron with a mass of 15.5g is placed into a solution containing 21.0g of copper (II) sulfate, and copper begins to form. After some time, the reaction stops because all the copper (II) sulfate has reacted. The iron strip is found to have a mass of 8.5g. The mass of copper formed is found to be 8.60g. What mass of iron (II) sulfate has been formed in the reaction?

11.9: Double Replacement Reactions