For the enzymatic degradation of 4-chlorobenzoic acid shown, what is the intermediate A?

For the following monobromination reaction, what is the expected product? 

Which of the following structures is NOT a contributing resonance structure A that explains the regiochemistry for the monobromination of toluene?

From the reaction coordinate shown below, which compound is formed faster, A or B?

For the following diagram regarding the enthalpy for the hydrogenation of 1-butene and 1,3-butadiene, which statement is true?

Which of the following are conjugated polyenes?

What is the Friedel-Crafts product in the following reaction? ++   AlCl3

The following molecule is conjugated:

The highest occupied molecular orbital (HOMO) for the allyl cation is best represented by which of the following molecular orbital (MO) diagrams?

If trying to convince someone to buy a new product that conserves energy, which of the follow is the best way to frame it so that more people purchase it? (Based on prior research)