Chemical changes are considered unseen because they occur at the atomic level, changing the actual structure of the thing.
The answer is d cuz it’s doesn’t make a lot of the formula
Do you got the answer with you or do u have to work them out to get the answer
The term for a push or pull is called Force.
Answer : The balanced chemical equation is,

Explanation :
Balanced chemical equation : It is defined as the number of atoms of individual elements present on the reactant side must be equal to the number of atoms of individual elements present on product side.
The given unbalanced chemical reaction is,

This chemical reaction is an unbalanced reaction because in this reaction, the number of atoms of individual elements are not balanced.
In order to balanced the chemical reaction, the coefficient 2 is put before the
, the coefficient 3 is put before the
and the coefficient 4 is put before the
.
The energy evolved in this reaction = 
Thus, the balanced chemical reaction will be,
