Calculate the standard enthalpy of formation of carbon disulfide (CS2) from its elements, given the following data.C(graphite) + O2(g) -- CO2(g)...

Hrxn = -1073.6 kJ/mol2. When acetylene is burned C2H2 (g) + 5/2 O2 (g) 2 CO2 (g) + H2O (l) H = -1299 kJ What is the heat of formation for acetylene in kJ/mol if Hf[H2O (l)] = - 285.8 kJ/mol and Hf[CO2 (g)] = - 393.5 kJ/mol