Which of the following is the highest energy conformer of 2,3-dimethylbutane? 

What is the alternate (ring flip) chair conformation of the following compound?  

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

Which arrow(s) indicates chiral center(s) in nicotine, the molecule shown below?

Which term best describes the left-hand double bond in the alkene below?

Shown below is the structure of Crestor® (rosuvastatin), a medication used to reduce cholesterol. Which term describes the double bond indicated by the arrow?

What is the specific rotation of pure (S)-carvone if a sample of (R)-carvone of 85% ee has a specific rotation of −52?

Rank the following from highest to lowest priority according to the Cahn-Ingold-Prelog system. I. -CH2CH3 II. -CHCH2 III. -CCH IV. -CH3  

Which of the following is bicyclo[2.2.2]octane?

What is the relationship between the following pair of structures?