For the gas-phase reaction 2A+BC+D, taking place in a flow reactor an exit conversion of X=0.62 is achieved. The incoming feed is an equimolar mixture of A and B and has a total molar flow rate, FT0, of 12mol/min and volumetric flow rate, v0, of 20 dm3/min. The reactor is isothermal and isobaric. What are the concentrations of A and B (in mol/dm3 ) at the reactor outlet? If the reaction above follows an elementary rate law with kA=0.18dm6/mol2min. What is the reaction rate at X=0.62