I have been interested in this game for quite a long time, and I finally got to play it. I have some few questions though regarding the chaos system.

What is the highest amount of kills one can get, and still achieve a low chaos score on a mission?
Does this kill amount change depending on the mission? and which missions have the highest kill allowance and lowest kill allowance for getting low chaos?
What is the highest total amount of kills for all missions total that I can get and still get the low chaos ending?