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qwerty1785
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Homework Statement
I need to find the amount of usable air from decompressing a scuba tank from 3000psi to 100 psi. The tank is a standart 80cu ft scuba tank and the air is being drawn from the tank at a rate of 1.5 cubic feet per minute and 100 psi at 20 celsius.I know that air is not an ideal gas but am not sure if I can assume it will behave similar here so ideal gas law might not work. would van der waals equation be what I need? I know the air decompressing that much will get very cold and not be as much volume as ideal, but how much is it exactly?