Show the products of the first step of the following reaction. Explain why the stereoselectivity of the oxymercuration step becomes insignificant after the reduction step. 

Will the following oxymercuration-reduction reaction produce an equal mixture of stereoisomers? Explain. 

Suggest a possible mechanism for the oxymercuration step of the reaction given below. Take into account the stereochemistry of the products formed.

Based on the experimental results of the oxymercuration-demercuration reaction, compare the stabilities of the carbocation and the mercurinium ion given below, and suggest why one is more stable than the other.

Identify the reagents needed for the following reaction:

Oxymercuration-reduction can also be used to generate cyclic esters as shown below. Show the most probable mechanism for this reaction.