Consider these reactions, where M represents a generic metal.

2M(s)+6HCl(aq)⟶2MCl3(aq)+3H2(g)Δ1=−856.0 kJ

HCl(g)⟶HCl(aq) Δ2=−74.8 kJ

H2(g)+Cl2(g)⟶2HCl(g) Δ3=−1845.0 kJ

MCl3(s)⟶MCl3(aq) Δ4=−416.0 kJ

Use the given information to determine the enthalpy of the reaction

2M(s)+3Cl2(g)⟶2MCl3(s)