Methanol (CH3OH) has a total of 5 single bonds in its Lewis structure. To explain, methanol consists of one carbon atom, four hydrogen atoms, and one oxygen atom. In the Lewis structure, the carbon atom is at the center and forms four single covalent bonds: three of these bonds connect the carbon to the three hydrogen atoms, and one bond connects the carbon to the oxygen atom. Additionally, the oxygen atom forms a single bond with one hydrogen atom, resulting in a total of 5 single bonds in the entire molecule.