15. Draw a qualitative energy diagram for CH3CHCH(CH3)2, relative to the C2-C3 bond. The Newman projections are drawn below. CH CH3 CH CH CH3 H H H CH3 CH3 CH3 H H CH3 CH H CH3 H3C CH3 |H CH3 HC H CH3 H H CH3 H CH CH3 QipHs