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A Cu/Cu2+ concentration cell has a voltage of 0.23 V at 25 C. The concentration of...

A Cu/Cu2+ concentration cell has a voltage of 0.23 V at 25 C. The concentration of Cu2+ in one of the half-cells is 1.5×10-3 M. What is the concentration of Cu2+ in the other half-cell? (Assume the concentration in the unknown cell to be the lower of the two concentrations.) Express your answer using two significant figures.

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