5 12. a. Draw the best chair conformation for trans-4-methyl-1-isopropylcyclohexane. b. Which is more stable, cis- or

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512. a. Draw the best chair conformation for trans-4-methyl-1-isopropylcyclohexane.b. Which is more stable, cis- or trans-4-methyl-1-isopropylcyclohexane? (4 pts total)13. Draw a Newman projection for the best conformation of 2-methylpentane, relative to theindicated bond. In your picture, write "anti" and "gauche" to indicate which methyl group is antiand which is gauche relative to the ethyl group. (You may abbreviate the ethyl and methyls , egEt, Me) (3 pt)MeMeEt14. Rank the following: (2 pts each)Combined+CO2 CH3`CO2 CH3+CO2 CH3Diels-AlderCO2CH3Reactivitya.Stabilityb.BrCIBrCombined++ 0+ 0SN2ReactivityONaONaONaC.