Answer
Nitric acid $(HNO_3)$ is the conjugate partner of $N{O_3}^-$.
Work Step by Step
1. Identify if the substance is an acid or a base (or both):
- $N{O_3}^-$ is a base.
2. Since $N{O_3}^-$, add one proton to it:
- Add one hydrogen and sum one to the charge:
$N{O_3}^- -- \gt HNO_3$
- This is the conjugate acid of $N{O_3}^-$.
3. Name it:
$N{O_3}^-$: Nitrate ion.
"ate" ions $-- \gt $ "ic" acids.
Therefore : $HNO_3$ = Nitric acid.