C2H5OH(v) --> CH3CHO(v) + H2(g)

is carried out with the feed entering at 300 degrees celsius, the feed contains 90 mole% ethanol (C2H5OH) and 10% acetaldehyde (CH3CHO) with a flow rate of 200 mol/s. If the conversion of ethanol is 50% and the outlet temperature is 250 degrees celsius, how much heat is added to or removed from the reactor?