13. (a) The conformations of some highly substituted cyclohexanes were studied (Dalton Trans 2013, 42, 13404). The two chair conformations for compound J differ by 18 kcal/mol, draw the more stable chair conformation of compound J. Include all 6 substituents and the hydrogen atoin groups associated with each vertex. Take care to create a clear drawing (11o11-boricding electrons do not need to be shown). N(CH3)2 ОН OH HO (H3CN. (H3C) NY N(CH3)2 (H3C)2N N(CH3)2 Он conpoLund J H NH, (b) Another one of the structures studied was compound K. Is the difference in energy between the two chair conformations of compound Knole likely equal to 0.5, 16, 20, or 35.5 kcal/mol? Select which one it is. The energy difference between the two chair conformations of K is most like to be (circle one): 0.5 (16) 20 35.51 H2NYNH OH compound K