Use a Born Haber cycle to calculate the lattice energy (in kJ/mol) of Potassium Chloride (KCl) from the following data:
Ionization Energy of K(g) = 431kJ/mol
Electron affinity of Cl(g) = -346kJ/mol
Energy to sublime K(s) = 85kJ/mol
Bond energy of Cl2(g) = 236kJ/mol
Enthalpy for the reaction K(s) + 1/2Cl2(g) --> KCl(s) = -434kJ/mol
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