(a) Draw Newman projections of the most stable conformations about each of the carbon–carbon bonds in the principal chain of 2,2-dimethylpentane. Use models!

(b) Combine these to predict the most stable conformation of 2,2-dimethylpentane.

(c) Draw a line-and-wedge structure of the conformation you derived in (b) with the carbon–carbon bonds of the principal chain shown as lines, the bonds to all hydrogens of the principal chain shown as wedges or dashed wedges, and methyl substituents shown either as CH3 or Me.