A digital watch battery draws 0.40 milliamperes of current, which is provided by a mercury battery whose net reaction is: HgO(s) + Zn(s) ? ZnO(s) + Hg(l) If a partially used battery contains 0.50 g of each of these four substances, for how many hours will the watch continue to run?

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Patrina SchowalterLv2

13 Dec 2019

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The two half-reactions for a mercury battery are shown below. How many moles of electrons are transferred in the net reaction when 1 mole of Zn(s) is consumed?

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