(Answered) A digital watch draws 020 ma of current provided by a

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A digital watch draws 0.20 mA of current provided by a mercury battery, whose net reaction is:

HgO(s) + Zn(s) ZnO(s) + Hg(l)

If a partially used battery contains 1.44 g of each of these four substances, for how many more hours will the watch run? The Faraday constant is 96485 C/mol. (in hours)

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