Question

Deduce the overall equation for the reaction of copper with NO3- and H+ to produce Cu2+ ions, NO2 and water.

Answer 1

you've already got a mixture of names, formulas, and a sort-of reaction written already. You need to turn those names into proper formulas, put them into a reaction, then balance.

Answer 2

It will be something like Cu+NO3+2H=Cu+NO2+H2O