hand 1- deffffffffffffffffffffffffffffffffffinitely c/c... his bet/bet range is some unknown but probably large amount of air, and 2pr+ which he doesnt have very much.

hand 2- weird runout for your hand and this action. i think i like betting 35-60% pot with my whole range so that it can include some weaker hands like QT and AT as well as sets, hands like KQ and the odd whiffed 75/87/53. as far as this exact situation you are unlikely to get value raised by any worse hands besides the lower sets so if he is the type to hero call in polarized spots bet big and if he is not i would bet like 280.

hand 3- i dont love the flop lead at all but whatever. your turn/river line is ok