calculate the lattice enthalpy of mgbr2 from the following data:
ΔH° sublimation of Mg(s) is 148 (kJ/mol)
ionization energy of is Mg 2187 (kJ/mol)
vaporization of Br2(l) is 31 (kJ/mol)
dissociation of Br2(g) is 193 (kJ/mol)
electron gain enthalpy of Br(g) is 331 (kJ/mol)
ΔH° for MgBr2(s) is 524(kJ/mol)