2006-09-14 05:41:29 · 4 answers · asked by weirdpunkaj_0622 1 in Science & Mathematics ➔ Chemistry
Fission?
2006-09-14 05:48:32 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Filter out carbon. Compress and cool off gasses - CO2 becomes dry ice long time before oxygen liquifies.
Otherwise centrifuge gases (as in enrichment of uranium).
Or dissolve CO2 in water. Oxygen has lower solubility in water.
2006-09-15 17:03:47 · answer #2 · answered by mimas 2 · 2⤊ 0⤋
Electrolyis will not work because it is thermodynamically unfavorable. The only mechanical means which might have a hope is a very low pressure vacuum and that could take years.
2006-09-14 06:33:29 · answer #3 · answered by Richard 7 · 0⤊ 0⤋
Electrolysis.
EDIT: Electrolysis is NOT thermodynamically favorable, true, but it's also not photosynthetic.
2006-09-14 05:51:02 · answer #4 · answered by Brian L 7 · 1⤊ 0⤋