Draw the structural formula for each of the following:
1. 2,3 - dimethyl butane
2. diethyl ether
3. propanoic acid

Explanation

(1) 2,3-dimethyl butane
`H-underset(H)underset(|)overset(H)overset(|)C-underset(CH_3)underset(|)overset(H)overset(|)C-underset(CH_3)underset(|)overset(H)overset(|)C-underset(H)underset(|)overset(H)overset(|)C-H`
(2) Diethyl ether
`H-underset(H)underset(|)overset(H)overset(|)C-underset(H)underset(|)overset(H)overset(|)C-O-underset(H)underset(|)overset(H)overset(|)C-underset(H)underset(|)overset(H)overset(|)C-H` (3) Propanoic acid