Answer : The balanced chemical reaction will be,

Explanation :
Balanced chemical reaction : It is a reaction in which the number of atoms of individual elements present on reactant side must be equal to the product side.
As per question.
When aqueous nitric acid react with aqueous ammonia then it gives ammonium nitrate as a product.
The balanced chemical reaction will be,

This reaction is an acid-base reaction in which an acid react with a base to give salt and water as a product.