4. Draw the two chair conformations of each compound and label the substituents as axial and equatorial. In each case, determine which position is more stable. a) Cis-1-ethyl-2-isopropylcyclohexane e) Cis-1-ethyl-4-methylcyclohexane b) trans-1-ethyl-2-isopropylcyclohexane acisExavind f) trans-1-ethyl-4-methylcyclohexane c) Cis-1-ethyl-3-methylcyclohexane g) cis-1,2-dimethylcyclohexane d) frans-1-ethyl-3-methylcyclohexane h) trans-1-tert-butyl-3-ethylcyclohexane