2006-11-24 22:14:31 · 5 answers · asked by Soulja 1 in Science & Mathematics ➔ Chemistry
The atmosphere is 21% oxygen. The process of separating the gases from each other is where the expense is. They compress the gas and the cool it until it turns into a liquid. Different gasses turn into a liquid at different temperatures. Then they bottle it and ship it.
2006-11-24 22:26:31 · answer #1 · answered by Mr Cellophane 6 · 0⤊ 0⤋
No ,it is present in the air. But to extract pure oxygen, you must separate oxygen from nitrogen, and this costs money
2006-11-24 22:40:50 · answer #2 · answered by maussy 7 · 0⤊ 0⤋
The biofuel foodstuff disaster is a phoney invention of its enemies. foodstuff expenses will bypass up as gas expenses bypass up, era. If we don't make biofuels the fee of petroleum will skyrocket much extra using fact it particularly is not renewable in the fast term. meaning the fee of foodstuff could probably bypass up even bigger if we don't make biofuels. mutually as utilising foodstuff vegetation to offer gas will improve the call for for foodstuff vegetation, wager what the effect of which would be? extra entreprenuers will start up planting biofuel vegetation in step with the better expenses to cut back the strain on foodstuff expenses. we are actually not close to a hundred% capacity on farm land in the worldwide. do not panic whilst those doomsayers say that something like biofuels won't artwork. The loose marketplace will remedy those "issues".
2016-12-29 11:19:21 · answer #3 · answered by ludwig 3 · 0⤊ 0⤋
ask a tree?
no not if you are clever about it.
For industrial purposes yeah of course, and why? because it saves you the bother of harvesting it.
2006-11-24 22:23:29 · answer #4 · answered by ballet-babe 3 · 0⤊ 0⤋
No, trees in the rainforest are producing tons of oxygen and that is not costing you anything. DUH
2006-11-24 22:23:41 · answer #5 · answered by Phiber C 1 · 0⤊ 0⤋