please help me, I couldn't find the answer. I tried everywhere including my textbook and on google.

1) discuss for solubility for all Functional groups.

2) Ethanol is more soluble in the water or hexanol. why?

3) Primary Amide/amine is more soluble in the water or tertiary Amide/Amine? provide an example

4) how is boiling water related to the polarity? justify your answer b providing the examples.