Liquid oxygen (LOX) is used as rocket fuel to launch satellites into space. However, it is easier (and less dangerous) to transport oxygen in gaseous form. What is the mass flow rate of gaseous oxygen that flows at 25 m/s through a 0.5-meter diameter pipe. Assume the temperature of the oxygen is 15 C and that the pipe is pressured to 150 kPa gage. The gas constant of molecular oxygen (O2) is [8.314 J / (K mol)] / (32 g / mol) * (1000 g / kg) = 259.8 J / (K kg).