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Calculate the voltage, \( \mathrm{E} \), of the cell at \( 25^{\circ} \mathrm{C} \)
\[
\mathrm{Mn}(\mathrm{s})\left|\mathrm{Mn}(\mathrm{OH})_{2}(\mathrm{~s})\right| \mathrm{Mn}^{2+}(\mathrm{x} \mathrm{M}), \mathrm{OH}^{-}\left(2 \times 10^{-4} \mathrm{M}\right) \| \mathrm{Cu}^{2+}(0.675 \mathrm{M}) \mid \mathrm{Cu}(\mathrm{s})
\]
\( P \)
Given that \( \mathrm{K}_{\mathrm{sp}}=2.7 \times 10^{-13} \) for \( \mathrm{Mn}(\mathrm{OH})_{2}(\mathrm{~s}), \mathrm{E}^{0}\left(\mathrm{Mn}^{2+} / \mathrm{Mn}\right)=-1.18 \mathrm{~V} ; \mathrm{E}_{\mathrm{Cu}^{2+} / \mathrm{Cu}}^{0}=0.34 \mathrm{~V} \)
W.
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