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A standard voltaic cell is constructed u...

A standard voltaic cell is constructed using Cu metal in 1.0 M `Cu(NO_(3))_(2)`(aq) and an unknown metal in a 1.0 M solution of its nitrate salt. The cell voltage is 0.47 V when the Cu half-cell is the cathode. What is the standard reduction potential of the unknown metal ? `[E_(Cu)^(@) = 0.34 V]`

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