Step-by-step explanation:
Chemical formula of a compound tells us about the number of atoms of elements that are present in a compound.
For the given options:
1. Nitric acid
This is an acid in which one hydrogen, 1 nitrogen and 3 oxygen atoms are present. The chemical formula for this compound is
![HNO_3](https://img.qammunity.org/2020/formulas/chemistry/high-school/yttq9ckizhe5w15t7g7jnct8q09t6mcsfg.png)
2. Sulfurous acid
This is an acid in which two hydrogen, 1 sulfur and 3 oxygen atoms are present. The chemical formula for this compound is
![H_2SO_3](https://img.qammunity.org/2020/formulas/chemistry/high-school/6zafnepl2hiqet1xmkhwiflqrkmtssnoe7.png)
3. Hypochlorous acid
This is an acid in which one hydrogen, 1 chlorine and 1 oxygen atoms are present. The chemical formula for this compound is
![HClO](https://img.qammunity.org/2020/formulas/chemistry/high-school/68ts0qzgm8fjveq5aa5bj7nj810i1rd4f0.png)
4. Ammonia
This is an acid in which three hydrogen and 1 nitrogen atoms are present. The chemical formula for this compound is
![NH_3](https://img.qammunity.org/2020/formulas/chemistry/high-school/jyqw8qu2oc9h11p3l900tvlckdpu7brdga.png)
5. Sulfuric acid
This is an acid in which one hydrogen, 1 sulfur and 4 oxygen atoms are present. The chemical formula for this compound is
![H_2SO_4](https://img.qammunity.org/2020/formulas/chemistry/middle-school/xgdzois6q005in09x6hv19eufpe45mk3s8.png)