Question

What are the `/_H-C-O` bond angles in `"dimethyl ether"`?

Answer 1

To a first approx. `/_H-C-O=109.5""^@`.

Explanation:

Each carbon atom is dimethyl ether is `sp^3`-hybridized, with bond angles approaching the ideal tetrahedral bond angle. Thus `/_H-C-O=109.5""^@`.