Oxygen therapy uses various devices to provide oxygento patients having difficulty getting sufficient amounts from airthrough normal breathing.
Among the devices are nasal cannula, which transport oxygen throughsmall plastic tubes from a supply tank to prongs placed in thenostrils.
Consider a specific configuration in which the supply tank (volume= 3.00 ft3) was filled to a pressure of 2100.0 psig at atemperature of -30.0°F.
The patient is in an environment where the ambient temperature is40.0°F.
When the tank is used, the pressure begins to decrease as oxygenflows at 5.00 L/min through a tube to the cannula where it isdischarged into the nostrils.
Estimate the original mass of oxygen in the tank using thecompressibility-factor equation of state. (kg O2)
What is the initial pressure when the temperature is 40.0°F?(atm absolute)
How long will it take for the gauge on the tank to read 50.0psig at an atmospheric pressure of 1 atm and the stated discharge?(.... x 10^3 min)
