Enthalpy of formation of dysprosium sesquioxide

The value for the enthalpy of formation of dysprosium sesquioxide has been confirmed by two sets of independent measurements involving the use of an oxygen bomb calorimeter and a solution calorimeter. The value obtained from the former was Δ H f o ( Dy 2 O 3 , 298.15 K ) = − ( 445.3 ± 1.0 ) kcal mol − 1 , and from the latter Δ H o f = -(445.5 ± 1.6) kcal mol −1 , to give a weighted average of -(445.32±0.85) kcal mol −1 .