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)-overset(O)overset(||)(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)=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)-underset(H)underset(|)overset(H)overset(|)(C)-H`