[patelm]

"Air is pumped at 0.1 m3/s into a vessel held at a steady 5 atm pressure; the outlet from this vessel discharges to atmosphere at 1 atm. Assuming that air behaves as a perfect gas, what are (a) the volumetric and (b) the mass flow rates of the discharge, if all values are calculated at 20°C?

Remember, 1 mol of a perfect gas occupies 22.4 litre at 0°C and 1 atm pressure. Alternatively, the universal gas constant R is 8314 J/kmol K. Assume that the average molecular mass of air is 29 g/mol."