[填空题]
A standard cylinder of oxygen used in a hospital ha 4)8lvzkik: +igl1 me9ztf q 5ftbfz)(s gauge pressure = 2000 psi jojh ,0p-gu8m a7 6wks(13,800 kPa) and at T = 259K How long will the cylinder last if the flow rate, measured atw h6-ko7mgujj 8s0,ap atmospheric pressure, is constant at 2.4 L/min. $\approx$ hour