What is the relationship between the two structures shown?

Which of the following is the lowest energy chair conformation of the following cyclohexane?

Select the word or phrase 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.)   Axial and equatorial hydrogen atoms are interconverted during a ……………………… Complete word/phrase and correct spelling (verbatim) is required. No partial credit.

Select the word or phrase that complete each sentence (constitutional isomers, diastereomers, enantiomers, meso compounds, higher, lower, reaction, addition, carbocation, carbanion, nucleophiles, electrophiles, elimination, heterolysis, homolysis, reagent, substitution, stronger, weaker, charge, concerted, two step, SN1, SN2, racemization, hyperconjugation, alkyl halides, inversion):  ( correct spelling are required. No partial credit).   Stereoisomers that are not mirror images of each are  ………………………………………….            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 D is represented by Roman numeral ____. (enter the Roman number. No other numbers will be accepted)

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.