The halogens fluorine (F2) AND BROMINE (Br2) react together as gases to give the gas bromine pentafluoride, Br

The halogens fluorine (F2) AND BROMINE (Br2) react together as gases to give the gas bromine pentafluoride, BrF5. The molar bond enthalpies for fluorine and bromine are as shown below: Bond F-F Br-Br Molar bond enthalpy/KJ 159 193 The overall enthalpy change (?H) for the reaction of the five moles of fluorine with one mole of bromine is -429KJ (a) Calculate the mean molar bond enthalpy of the Br-F bonds in Bromine pentafluoride. You should show clearly all the stages in your calculation and explain your reasoning