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    Electrochemistry - Half-reactions and overall cell process

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    I am trying to determine the separate half-reactions and overall cell process for the following and need some help:

    A miniature battery is composed of Zn and a paste of KOH, water, mercury (II) oxide, and mercury. Zinc and potassium hydroxide are consumed, mercury is deposited, and potassium zincate is formed.

    Also, what would be the notation for this cell?

    Thanks for helping!

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