Which compound is mostly likely to spontaneously decompose under the reaction conditions?

 What is the expected product A for the following reaction sequence?  

What is the expected product A for the following intramolecular aldol reaction?  

Which of the following is NOT expected to result in an efficient crossed aldol condensation reaction?

Cyclohexylamine is insoluble in water at neutral pH. Which aqueous solution does it dissolve in?

What is the expected product A under the conditions shown?  

What is the compound B for the following reaction?

Which is the strongest Brønsted base?

Which substrate will best react with ethyl acetate (CH3CO2Et) in a crossed-Claisen condensation in the presence of NaOEt?  

What is the expected product A for the following crossed aldol reaction?