Ksn1604go Ksn1604go Chemistry Answered Calculate the lattice energy of CuBr(s) using a Born–Haber cycle. Data: Enthalpy of sublimation of Cu(s) = 337.7 kJ/mol 1st ionization energy of Cu(g) = 745 kJ/mol Enthalpy of vaporization of Br2(l) = 29.96 kJ/mol