5. Assume that 1,9g/s of Air and 0,1g/s of Propane (C3H8) are premixed, at Standard temperature and Pressure, and is flowing from left to right through a long tube with a diameter of 10cm. If the mixture is ignited in the middle of the tube and the density of the Propane-Air mixture is 1,2kg/m3 a. Which way does the flame propagate? b. How fast does it move? [ The following correlation may be useful: SL=34.2138.7(1.08)2]