* Enthalpy of hydration, defined as the enthalpy change observed when one mole of gaseous ions are completely dissolved in water forming one mole of aqueous ions.

Enthalpy and isobaric specific heat capacity are very useful mathematical constructs, since when analyzing a process in an open system, the situation of zero work occurs when the fluid flows at constant pressure.

where the potentials as functions of their natural thermal and mechanical variables are the internal energy U ( S, V ), Enthalpy H ( S, P ), Helmholtz free energy A ( T, V ) and Gibbs free energy G ( T, P ).

Enthalpy and entropy are related to Gibbs free energy through the equation ( at a constant temperature ):

Enthalpy is a measure of the total energy of a thermodynamic system.

Enthalpy is a thermodynamic potential.

* Enthalpy of reaction, defined as the enthalpy change observed in a constituent of a thermodynamic system when one mole of substance reacts completely.

* Enthalpy of formation, defined as the enthalpy change observed in a constituent of a thermodynamic system when, one mole of a compound is formed from its elementary antecedents.

* Enthalpy of combustion, defined as the enthalpy change observed in a constituent of a thermodynamic system, when one mole of a substance combusts completely with oxygen.

* Enthalpy of hydrogenation, defined as the enthalpy change observed in a constituent of a thermodynamic system, when one mole of an unsaturated compound reacts completely with an excess of hydrogen to form a saturated compound.

* Enthalpy of atomization, defined as the enthalpy change required to atomize one mole of compound completely.

* Enthalpy of neutralization, defined as the enthalpy change observed in a constituent of a thermodynamic system, when one mole of water is produced when an acid and a base react.

* Standard Enthalpy of solution, defined as the enthalpy change observed in a constituent of a thermodynamic system, when one mole of an solute is dissolved completely in an excess of solvent.

* Enthalpy of fusion, defined as the enthalpy change required to completely change the state of one mole of substance between solid and liquid states.

* Enthalpy of vaporization, defined as the enthalpy change required to completely change the state of one mole of substance between liquid and gaseous states.

* Enthalpy of sublimation, defined as the enthalpy change required to completely change the state of one mole of substance between solid and gaseous states.

See Enthalpy of vaporization.

Enthalpy of solvation can help explain why solvation occurs with some ionic lattices but not with others.

Enthalpy is the capacity to do non-mechanical work plus the capacity to release heat.

Enthalpy of a reaction depends upon the conditions under which the reaction is carried out.

Enthalpy is given in ( SI ) joules per kilogram of air, or BTU per pound of dry air.

Enthalpy is typically the more important thermodynamic function for determining a more stable molecular conformation.

One can also can see the dependency of Gibbs Free energy on the macroscopic terms of Enthalpy, ΔH and Entropy, ΔS.

Where are the writers to treat these changes??

The networks for military communications are one of the best examples of networks which not only must be changed with the changes in objectives but also must be changed with the addition of new machines of war.

A variety of data are assembled to bear upon such alleged changes as diminished puritan morality, work-success ethic, individualism, achievement, lessened emphasis on future-time orientation in favor of sociability, moral relativism, consideration and tolerance, conformity, hedonistic present-time orientation.

Some fiscal changes are important.

This conformational entropy is, in this case, equal to the usual entropy, for there are no other changes or other energies involved.

Mutants may also be developed with changes in biochemical properties that are of importance in identification.

Important as these differences are, they should not obscure the basic fact that by shifting the hypothalamic balance sufficiently to the parasympathetic side, we produce depressions, whereas a shift in the opposite direction causes excitatory effects and, eventually, maniclike changes.

Perhaps a clue to these and related problems lies in the fact that changes in the intensity of hypothalamic discharges which are associated with changes in its balance lead also to qualitative alterations in reactivity.

Furthermore, conditioned reactions are fundamentally altered when the hypothalamic sympathetic reactivity is augmented beyond a critical level, and several types of behavioral changes probably related to the degree of central autonomic `` tuning '' are observed.

He showed convincingly that anxiety is a learned ( conditioned ) reaction and is the basis of experimental and clinical neuroses and assumed, therefore, that the neuronal changes which underlie the neuroses are functional and reversible.

Although we are still far from a complete understanding of these problems, as a first approximation, it is suggested that alterations in the hypothalamic balance with consequent changes in the hypothalamic-cortical discharges account for major changes in behavior seen in various moods and states of emotions in man and beast under physiological circumstances, in experimental and clinical neurosis, and as the result of psychopharmacological agents.

The men in power are committed in principle to modernization, but economic and social changes are proceeding only erratically.

Personal identification cards are issued to all adult males on which tax payments, inoculations, periods of employment, and changes of residence are recorded.

As we have noted, however, we are abstracting from changes in all determinants of this level except for changes in the wage rate.

Holding the final corporation entitled to sue on the claim, the Court cited the Seaboard, Novo Trading, and Roomberg cases for the proposition that `` transfers by operation of law or in conjunction with changes of corporate structure are not assignments prohibited by the statute ''.

Moreover, whereas in Interstate Commerce Commission parlance `` variable cost '' means a cost deemed to vary in direct proportion to changes in rate of output, in the type of analysis now under review `` variable cost '' has been used more broadly, so as to cover costs which, while a function of some one variable ( such as output of energy, or number of customers ), are not necessarily a linear function.

When lamb and mutton are irradiated at substerilization doses, the meat becomes dehydrated, the fat becomes chalky, and, again, unnatural changes in color occur.

These tests are not accelerated and must be repeated to evaluate dimensional changes after repeated launderings.

The ideal storage temperature for long periods is about fifty-five degrees, with an allowable range of five degrees above or below this, provided there are no sudden or frequent changes.