The chemical reaction represented below is summarized by a  .H(NO3) + Cu --> Cu(NO3)2 + NO2 + H2O

The chemical reaction you've provided is a reaction between nitric acid (HNO3) and copper (Cu). Here's the step-by-step process:

1. Nitric acid reacts with copper: This is a single displacement reaction where copper displaces hydrogen from nitric acid.

2. Formation of Copper Nitrate: The copper and nitrate ions from nitric acid combine to form copper nitrate (Cu(NO3)2).

3. Release of Nitrogen Dioxide and Water: The remaining hydrogen from nitric acid combines with some of the oxygen to form water (H2O), and nitrogen dioxide (NO2) is also released.

So, the balanced chemical equation for the reaction is:

4HNO3 + Cu --> Cu(NO3)2 + 2NO2 + 2H2O

This indicates that 4 moles of nitric acid react with 1 mole of copper to produce 1 mole of copper nitrate, 2 moles of nitrogen dioxide, and 2 moles of water.