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Energy for system

Where nu is the total number of reactant moles present initially. Equation 26 gives an independent method for determining the activation energy for systems with small amounts of transformation during the induction period—i.e., lnr = E/RT0 + constant for mixtures of constant initial composition and total pressure. [Pg.93]

Figure 29. Ratio of cross section for excitation transfer followed by atomic autoionization (AAI), to total ionization cross section, as function of collision energy for systems He -Ar,Kr,Xe.77... Figure 29. Ratio of cross section for excitation transfer followed by atomic autoionization (AAI), to total ionization cross section, as function of collision energy for systems He -Ar,Kr,Xe.77...
TABLE IV Theoretical Specific Energy for Systems Being... [Pg.250]

The RETOF technique has applications far beyond mass analysis and determination of metastable dissociation fraction. In particular, it provides a very valuable approach to determining kinetic energy release (KER) during evaporative dissociation. As shown in this section, these data also find application in determining absolute values of cluster bond energies for systems without a barrier to... [Pg.213]

In order to carry out a priori theoretical calculations of the potential energy for systems with a large number of electrons, the semitheoretical methods use effective potentials which simulate the core electrons.19 48 Note here that the inclusion of relativistic effects may be important in the description of the effective potentials in heavy atoms.49... [Pg.270]

The systematic error caused by the definition of the zeroth order Hamiltonian, as described above, leads to too low relative energies for systems with open shells. A consequence is that dissociation and excitation energies will be too low because the dissociated or excited state has usually more open shell character than the reference state. Is there a way we can remedy this systematic error The diagonal elements of the generalized Fock operator can for an active orbitals be estimated as ... [Pg.143]

Figure 12. The gas - gas (part a) and the gas - solid (part b) components of the total energy for systems with Figure 12. The gas - gas (part a) and the gas - solid (part b) components of the total energy for systems with <r = 0.8 and characterized by different corrugation of the gas - solid potential.
Work of a flowing fluid against pressure. One additional flow of energy for systems open to the flow of mass must be included in the energy balance equation it is more subtle than the energy flows just considered. This is the energy flow that arises from the fact that as an element of fluid moves, it does work on the fluid ahead of it, Snd the fluid behind it does work on it. Clearly, each of these work terms is of the PAV type. To evaluate this energy flow term, which occurs only in systems open to the flow of mass, we. will compute the net work done as one fluid element of mass (M)i enters a system, such as the valve in Fig. 3.1-1, and another fluid element of... [Pg.48]

The chemical potential describes the tendency of solute, surfactant, or dye to move from solution to the fiber. It is analogous to a partition coefficient. Gibbs suggested the use of this parameter in place of the free energy for systems where the free energy has the disadvantage of depending on the amount of the system [64],... [Pg.234]

Thus, comparison of calculation results with experimental data demonstrates ab initio Hartree-Fock method in the 6-3 IG basis set provides qualitatively correct conclusion on hydrogen bond energies for systems considered. This model was applied to investigate the interaction between water and hydroxyfullerene cluster Qo. Hydroxyfullerene is a proper object for quantum-chemical modeling of interaction between activated carbon nanoparticle and water. At the same time hydroxyfullerene is of great interest because of its possible applications in medicine, for water disinfection, and for polishing nanosurfaces. [Pg.202]

In electronic structure calculations, the zero point for the energy function has all particles (electrons and nuclei) infinitely removed from each other, and this common reference state allows energies for systems with different numbers of particles to be directly compared. If the same reference is used in force field methods, the energy function becomes an absolute measure of molecular stability. The difference relative to the normal reference state for force field functions is the sum of all bond dissociation energies, at least for a simple diagonal force field. If correction terms are added to the... [Pg.50]

The results presented above are in quite satisfactory agreement with experimental data and encourage the use of HOSE in order to estimate stabilization energies for systems with no calorimetric data. [Pg.9]

The AHlower energy for system. So, the movement is accepted and the new position is stable place for atom. [Pg.220]

Figure 5.70 Concentration dependence of the molar Gibbs energy for systems with different strong real behavior A = coefficient of the Porter equation (Eq. (5.19)). Figure 5.70 Concentration dependence of the molar Gibbs energy for systems with different strong real behavior A = coefficient of the Porter equation (Eq. (5.19)).
Equations (20) to (31) give the density distributions and free energies for systems with solvent, homopolymer, and diblock copolymer, as long as all the interaction potentials and the potential fields other copolymer architectures are similar, and in the literature. [Pg.315]


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See also in sourсe #XX -- [ Pg.335 ]




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