Calculate ∆Hrxn for the reaction on the right. ∆Hrxn = This reaction is 2Fe(s) + Al₂O₃(s) -822.16 kJ Energy -1,669.8 kJ 2Al(s) + Fe₂O₃(s) 2Al(s) + Fe₂O₃(s) 2Fe(s) + Al₂O₃(s) Reaction Progression