enthalpy|enthalpies in English

noun

sum of the internal heat in a system plus the product of the system's volume and external pressure (Thermodynamics)

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1. These data are combined with published values of the high-temperature enthalpy of crystalline Anorthite and the enthalpy of vitrification of Anorthite to obtain the enthalpy of fusion of Anorthite

2. Lattice enthalpies can also be calculated using a theoretical model.

3. The enthalpies of fusion are nearly monotonic functions of blend composition.

4. The enthalpy is constant in the throttling process.

5. Another commonly advected quantity is energy or enthalpy.

6. The energetic (reaction enthalpy) and kinetic data (reaction order, enthalpy and entropy of activation) of this reaction were determined by means of differential scanning calorimetry.

7. The standard heat capacity, entropy, sublimation enthalpy of graphite.

8. Only differences in enthalpy are of practical engineering interest.

9. The alcohols have both higher entropies and enthalpies of activation than the ketones.

10. Enthalpy of Atomization is denoted by the symbol ΔH a.

11. An excess enthalpy equation is established based on this thermodynamic model.

12. Possible reasons for these enthalpy and entropy changes are discussed.

13. Above and below Tc the enthalpy of association was practically zero.

14. The general corresponding-states equation of specific enthalpy of saturated liquid wasobtained.

15. On the other hand, the enthalpies of reaction are linearly correlated to the entropies of reaction.

16. However, it is possible to measure changes in enthalpy (ΔH) by measuring temperature changes, which represent heat being lost or gained.To measure enthalpy changes, we use what is called Calorimetry.

17. Total energy (enthalpy) of activation for flow through paste, and entropy, were evaluated.

18. The enthalpies and entropies of fusion of these complexes have been estimated by differential scanning calorimetry.

19. This is because lattice enthalpies relate to the formation of bonds and energy is released when bonds are formed.

20. This work was undertaken for the evaluation and revision of group-additivity values necessary for predicting standard enthalpies of formation and enthalpies of vaporization of ethers, Acetals, ketals, and ortho esters by means of Benson's group-additivity methodology

21. Enthalpies and entropies of activation characterizing the formation of the 1:1 σ-complexes have been determined.

22. A change in enthalpy also takes place when a change of phase occurs.

23. A Calorimeter is used to measure the enthalpy, the heat energy, of a reaction

24. Condensers increase the enthalpy drops and turbine work by lowering the turbine outlet pressure

25. The database on the standard molar enthalpies of vaporization has been extended with measurements on several Acetals, ketals