CA0CA=exp(avx4DDABx) Use the equation derived in class to calculate the relative concentration of CO at the exit of the channel where x=L,CA(L)/CAo. Assume the following channel parameters; stagnant film thickness =100m, length of catalytic converter L=30cm, and channel side dimension a=5 mm. There is an instantaneous reaction at the channel wall. The diffusivity of CO(A) through exhaust gas (C) is DAC=0.3104m2/s at 373K. In this problem, species B is CO2. Further, assume that the temperature inside the channel of the catalytic converter is 1,000K. Assume that the exhaust pressure in the catalytic converter is 1 atmosphere. Further, assume that vx is 200 cm/sec. Note: 5 points of extra credit for anyone who can figure out how vx was calculated. I assumed a 2-liter engine running at 3,000 rpm (revolutions per minute). The engine is a 4-stroke engine. The total cross-sectional area through which the exhaust flows for all the channels in the catalytic converter is 250cm2. To meet emissions targets, the catalytic converter must reduce the CO concentration in the engine exhaust to a very low level, such that CA(L)/CAO