A small oxygen tank at a gauge pressure of 115 atm has a


A small oxygen tank at a gauge pressure of 115 atm has a volume of 6.90 L at 20.0oC.

(a) If an athlete breathes oxygen from this tank at the rate of 9.00 L/min when measured at atmospheric pressure and the temperature remains at 20.0oC, how long will the tank last before it is empty?

(b) At a particular moment during this process, what is the ratio of the rms speed of the molecules remaining in the tank to the rms speed of those being released at atmospheric pressure?

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Physics: A small oxygen tank at a gauge pressure of 115 atm has a
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