The standard enthalpy of decomposition of the yellow complex H_(3)NSO_(2) into NH_(3) and SO_(2) is +40 kJ mol^(-1) . Calculate the standard enthalpy of formation of H_(3)NSO_(3).DeltaH_(f)^(0)(NH_(3))= -46.17 kJ mol^(-1), DeltaH_(f)^(0)(SO)_(2)= -296.83