How much oxygen would make it's way down to the water if no mixing happens when put into container? I always hear of blanket of CO2 over a liquid. I'm trying to relearn some thermodynamics principles. Would the partial pressure between the CO2 never allow the oxygen diffuse into the water if the height of CO2 is say 3" high over a 12" diameter of liquid? I tried doing some googling but get lots of hits from lungs and respiratory due to Fick :-) I'd like to relearn the processes that allows or inhibits the oxygen getting to the CO2 which then leads to the liquid. Would all three be completely separate in another 1000 years I guess? Thanks for any help.