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Balance the following reaction. Which compound is the oxidizing agent in the reaction below? Which is reducing agent? Show oxidation # and change in oxidation number for each element that changes?

Copper reacts with nitric acid to produce copper(II) nitrate, nitrogen dioxide gas, and water.

____Cu(s)  +  ___HNO3(aq)  →  ___Cu(NO3)2(aq)  +  ___NO2(g)  +  ___ H2O

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