Exercise $8.$ Give the structural formula.

a$)2,3,4-$trimethylhexane

b$)4-$tert$-$butyloctane

c$)4-$methyl$-2-$heptyne

d$)3-$octanone

e$)4-$chlorohept$-2-$ene or $4-$chloro$-2-$heptene

f$)3-$hydroxybutanoic acid

g$)4-$isopropylheptan$-2-$one or $4-$isopropyl$-2-$heptanone

h$)3-$methyl$-$butan$-2-$ol or $3-$methyl$-2-$butanol

i$)3,3-$dimethylbutanal

j$)5-$ethyl$-4-$methylhept$-2-$yne or $5-$ethyl$-4-$methyl$-2-$heptyne

k$)6-$fluoro$-3-$methylhex$-4-$enoic acid or $6-$fluoro$-3-$methyl$-4-$hexenoic acid

l$)1,3-$dimethylcyclohexane