A 2.036 g of copper (II) salt was dissolved in a 250 mL volumetric flask. A 25 mL aliquot of the solution was analyzed by adding 1 g of potassium iodide and titrating the liberated iodine with 24.45 mL of 0.1664 M of sodium thiosulfate. Determine the percent by weight Cu in the sample.

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