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A digital watch battery draws 0.40 milliamperes of current, which is provided by a mercury battery...

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Chemistry

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 batterycontains 1.80 g of each of these four substances, for how manyhours will the watch continue to run?

Answer & Explanation Solved by verified expert
4.1 Ratings (585 Votes)
The half reactions for the given reaction are as follows Hg2 2e Hg reduction Zn Zn2 2e Zn oxidation An ampere is a unit of charge per time Coulomb per second There are 2 electrons    See Answer
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