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The iodine liberated by the action of excess KI on a sample of Cu2+ prepared from 0.2907 g of very pure copper wire consumed 28.37

The iodine liberated by the action of excess KI on a sample of Cu2+ prepared from 0.2907 g of very pure copper wire consumed 28.37 mL of a sodium thiosulfate solution in titration to the starch end point. Calculate the molar concentration of the sodium thiosulfate solution.

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