已知反应:(1)C(s)+O2(g)═CO2(g)△H=﹣393.5kJ/mol
(2)CO(g)+ 12 O2(g)═CO2(g)△H=﹣283.0kJ/mol
则反应:C(s)+ 12 O2(g)═CO(g)的△H 是( )