Using Newman projections, draw the most stable conformer for the following: a. 3-methylpentane, considering rotation about the

Question:

Using Newman projections, draw the most stable conformer for the following:
a. 3-methylpentane, considering rotation about the C-2--C3 bond
b. 3-methylhexane, considering rotation about the C-3--C4 bond
c. 3,3-dimethylhexane, considering rotation about the C-3--C4 bond