Disclaimer: I'm a 10NL player who is not overly profitable. Take my advice at face value, pros here will likely correct my mistakes.

Hand 1: I re-raise pre-flop... if he then calls or re-raises back you can narrow his range signifigantly. As played, QQ or KK is definately in his range, so with the large re-raise I give him credit for it and fold... might be a leak but that's my play.

Hand 2: Ok, so you raise, he calls, other guy folds to aggression. there are flush possiblities on the board, also sets are in play... he flat called a little over 1/2 pot on the flop... hmm... then leads out on the turn... without more info you may want to add in the straight draws... so he could be drawing a couple of ways... or he could have hit. I think leading out on the turn would be better, but as played I think I'm calling this. then depending on river deciding where to go from there...