Answer
Please see the work below.
Work Step by Step
The balanced chemical equation is given as
$4NH_3+5O_2\rightarrow 4NO+6H_2O$
The above chemical equation shows that the ratio of $NH_3$ and $NO$ is $\frac{4}{4}$ or 1 to 1 which means that one volume of $NO$ combines with one volume of $NH_3$ at the constant temperature and pressure.
