Calculate the standard enthalpy of formation of carbon disulfide (CS2) from its elements, given the following data.
C(graphite) + O2(g) --> CO2(g) ΔH°rxn = -393.5 kJ/mol
S(rhombic) + O2(g) --> SO2(g) ΔH°rxn = -296.4 kJ/mol
CS2(l) + 3 O2(g) --> CO2(g) + 2 SO2(g) ΔH°rxn = -1073.6 kJ/mol