The formula of ethanol is given by:
[tex]CH_3CH_2OH[/tex]In this molecule there are 6 H atoms and 2 C atoms and so the ratio is:
[tex]H:C\text{ }is\text{ }6:2\text{ }[/tex]This can be further simplified to:
[tex]\begin{gathered} H:C \\ 3:1 \end{gathered}[/tex]Answer: The mole ratio of H:C is 3:1.