A chemistry problem by Matin Naseri

Chemistry Level 1

What is $\color{#3D99F6}{Di Hydrogen}$ $\color{#D61F06}{Monoxide}$ chemical Formula??

\large{H_2O_2}

\large{CO}

\large{KCl}

\large{C_3H_8O_5}

\large{H_2O}