Which structure represents (E)-1-bromo-2-methylhex-2-ene?

Consider the three-step mechanism for the reaction of A through intermediates B and C to produce D shown below.A → B    Ea = 15 kcal/mol,    ΔH° = 13 kcal/molB → C    Ea = 10 kcal/mol,    ΔH° = -6 kcal/molC → D    Ea = 2 kcal/mol,      ΔH° = -20 kcal/molWhich of the three steps is rate determining?

Which alkyl halide reacts the fastest in an E2 reaction?

What is(are) the major organic product(s) obtained from the following substitution reaction?

Which is the most likely mechanism for the following reaction?

Bonus question What is the product of the following reaction?  

Which of the following energy diagrams represents the course of an endothermic SN1 reaction?

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):  (   Strong ………………….. favor SN2 mechanism.  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, nucleophile, electrophile, elimination, heterolysis, homolysis, reagent, substitution, stronger, weaker, charge, concerted, two step, SN1, SN2, racemization, hyperconjugation, alkyl halides, inversion):     Polar aprotic solvents favor …………………..  mechanism. Complete word/phrase and correct spelling (verbatim) is required. No partial credit.

Which of the following energy diagrams represents the course of an exothermic SN1 reaction?