1. Construct a model of 1,2-dibromoethane. Draw all of the Newman projections for the staggered and eclipsed conformations. Indicate the most and least stable conformers. What is the cause of this stability/instability? Is it possible to isolate these conformational isomers at room temperature? 2. What is the IUPAC name of

a. 1-methyl-2, 3-dichlorocyclopentane

b. 1, 2-dichloro-3-methylpentane

c. 1, 2-dichloro-3-methytcyclobutane

d. 3-methyl-1, 2-dichlorocyclopentane

e. 1, 2-dichloro-3-methylcyclopentane