Expand each of the following condensed formulas into their complete structural formulas.
`(a) CH_(3)CH_(2)COCH_(2)CH_(3)`
`(b) CH_(3)CH=CH(CH_(2))_(3)CH_(3)`

Explanation

(a) `H-underset(H)underset(|)overset(H)overset(|)C-underset(H)underset(|)overset(H)overset(|)C-oversetOoverset(||)C-underset(H)underset(|)overset(H)overset(|)C-underset(H)underset(|)overset(H)overset(|)C-H`
(b) `H-underset(H)underset(|)overset(H)overset(|)C-overset(H)overset(|)C=underset(H)underset(|)C-underset(H)underset(|)overset(H)overset(|)C-underset(H)underset(|)overset(H)overset(|)C-underset(H)underset(|)overset(H)overset(|)C-underset(H)underset(|)overset(H)overset(|)C-H`