Computing...

Input interpretation:

Cu  (copper) + HNO_3  (aqueous nitric acid)    -->    Cu(NO_3)_2  (copper(II) nitrate) + NO_2  (nitrogen dioxide) + H_2O  (water)


Balanced equation:

 Cu + 4 HNO_3    -->     Cu(NO_3)_2 + 2 NO_2 + 2 H_2O

Source information
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