Aluminum metal reacts with chlorine with a spectacular display of sparks:2{rm{ Al}}(s) + 3{rm{ Cl}}_2 (g) rightarrow 2{rm{ AlCl}}_3 (s) Delta H^circ = -1408.4 {rm kJ}.How much heat (in kilojoules) is released on reaction of 4.85 {g} of {Al}?.