Respuesta :
The branch of science in which we study chemicals is called chemistry.
The correct answer is decomposition.
When a compound is a breakdown into its constituent element is called a decomposition reaction.
In the given question, the [tex]NO_2[/tex] is decompose into the [tex]O_2[/tex] and [tex]N_2[/tex].
Hence, by this conclusion, we can say that the reaction is a decomposition reaction.
For more information, refer to the link:-
https://brainly.com/question/25026730
