By examining a molecular model of cyclohexane with several all-trans-equatorial isopropyl groups and another model with several all-trans-equatorial ethyl groups, determine why adjacent equatorially oriented isopropyl groups experience severe steric interactions which are lacking in the ethyl case. draw a chair conformation of the former case which illustrates these severe steric interactions. also draw a newman projection looking down one of the c−c bonds connecting the cyclohexyl ring to an equatorial isopropyl group and illustrate a conformation with severe steric strain. select correct all-equatorial chair conformation of compound 2.