$(28)($c$)1-$ choloro propane is a gas

$($d$)$ propanoyl chloride is less expensive

$(28)$ The realative reactivity of alkane hydrogens to radical chlorination can vary consider the monochlorination of $2-$ methylbutane and the four products produced? from this data what is the appxox. relative reactivity blu the hydrogens on primary and tertiary carbons?

$($a$)1$ to $2($primary fo tertiary$)$

$($b$)1$ to a u

$($c$)3$ to $2($n u $")$

$($d$)1$ to $4({?}^4$

$(29)$ In the following sequencs what is R$?$

$RB{r}_{2}S2KO{H}_{\text{e}\text{t}\text{h}\text{a}\text{n}\text{o}\text{l}}+\frac{KMn{O}_3}{H_3{O}^{+}}\frac{H}{O}OC+\frac{H}{O}O{C}^{+\frac{C}{O}OH}$

$($a$)$ cyclohexene

$($c$)$ hex$-3-$ene

$($b$)$ aniline

$($d$)$ cyclopentanol.