Construct an enthalpy diagram to calculate the lattice

Question

Construct an enthalpy diagram to calculate the lattice energy of CaCl₂ from the following information. Energy needed to vaporize one mole of Ca(s) is 192 kJ. For calcium, the first IE = 589.5 kJ mol^-1, the second IE = 1146 kJ mol^-1. The electron affinity of Cl is -348 kJ mol^-1. The bond energy of Cl₂ is 242.6 kJ per mole of Cl-Cl bonds. The standard heat of formation of CaCl₂ is -795 kJ mol^-1.

The lattice energy is _______ kJ/mol.