Values of the specific internal energy of bromine at three conditions are listed here.

(a) What reference

(b) Calculate ΔU (kJ/mol) for a process in which bromine vapor at 300 K is condensed at constant pressure. Then calculate ΔH (kJ/mol) for the same process. Finally, calculate ΔH (kJ) for 5.00 mol of bromine undergoing the process.

(c) Bromine vapor in a 5.00-liter container at 300 K and 0.205 bar is to be heated to 340 K. Calculate the heat (kJ) that must be transferred to the gas to achieve the desired temperature increase, assuming that U is independent of pressure.

(d) In reality, more heat than the amount calculated in part (c) would have to be transferred to the container to raise the gas temperature by 40 K, for several reasons. State two of them.