Which of the following is the correct Newman projection for the following compound showing the gauche conformation?

Select the word that will best complete the following sentence: (atomic, electronegativity, isomers, sp, sp2, sp3, stronger, weaker, Pi, sigma, hybridization, inductive, resonance, conjugated base, conjugated acid, higher, lower, active, electrophilic, nucleophilic, hydrophobic, hydrophilic, reactive, axial, conformations, equatorial, stereoisomers, steric, torsional, angle, alkanes, cycloalkanes, ring flip, element.)   The increase in energy where tetrahedral bond angles deviate from the optimum angle of  109.5 degree is  known as………………. strain. Complete word/phrase and correct spelling (verbatim) is required. No partial credit.

Match the Newman projection for the conformation of 2-methylbutane to the indicated position on the potential energy diagram.                                       ​ A B C D Conformation B is represented by Roman numeral ____. (enter the Roman number. No other numbers will be accepted)

Which of the following structures is (S)-3-methylheptane?

Identify the correct chair confirmations of the following compound and then indicate which one is least stable.

Identify the correct chair conformation of cyclohexane showing all of the axial hydrogen atoms.

Match the Newman projection for the conformation of 2-methylbutane to the indicated position on the potential energy diagram.                                       ​ A B C D Conformation C is represented by Roman numeral ____. (enter the Roman number. No other numbers will be accepted)

What is the correct order of the Cahn-Ingold-Prelog ranking of the following substituents as used in assigning R and S configurations of chiral centers? (higher ranking > lower ranking) ​ 1. −C≡CH 2. −CH2NH2 3. −NHCH3 4. −CN ​

Which of the following choices represents the Fischer projection of the compound shown?

What is the percentage of the S enantiomer in a sample of carvone that has a specific rotation of -30, given that the specific rotation of (R)-carvone is −61?