Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Energy magnitudes

The energy with n = 1 is 10 eV, and the next allowed one (n = 2) about 30 eV higher. These are typical energy magnitudes for electrons in atoms and molecules. Of course, the particle-in-a-box model is ridiculously oversimplified to apply seriously here (although it has been used to represent it electrons in systems with conjugated double bonds see Problem 5 below). It does, however, confirm our expectation that the quantum theory must be used for problems involving electrons in atoms and molecules. [Pg.28]

Present evidence shows that the association of lipids with proteins can be accomplished through attractive forces, which on the basis of a single unit are of low energy magnitude, but on the basis of multiple repeating units present... [Pg.29]

The kinetic energy of ship s impact on the quay is analyzed in the context of berthing maneuvers, in which the energy magnitude is important for the maneuver to be safe. Additionally, kinetic energy is taken into account in calculations of the consequences of an accident, in which an unintended contact of ship s hull with a marine structure (breakwater, quay etc.) occurs during maneuvers in restricted waters. [Pg.1952]

However, the mechanical methods of cellulose disintegration into nanosized materials takes into account the consumption of large energy magnitude hence an alternative pathway could be adopted to find some new and environmentally friendly methods for the isolation of cellulose... [Pg.10]

Choy GL, Kirby S (2004) Apparent stress, fault maturity and seismic hazard for normal-fault earthquakes at subduction zones. Geophys J hit 159 991-1012 Choy GL, Boatwright J (2012) IS 3.6 Radiated seismic energy and energy magnitude. In Bormann P (ed) (2012) http //nmsop.gfz-potsdam.de. [Pg.700]

It is helpful to consider qualitatively the numerical magnitude of the surface tensional stabilization of a particle at a liquid-liquid interface. For simplicity, we will assume 6 = 90°, or that 7sa = 7SB- Also, with respect to the interfacial areas, J sA = SB, since the particle will lie so as to be bisected by the plane of the liquid-liquid interface, and. AB = rcr - The free energy to displace the particle from its stable position will then be just trr 7AB- For a particle of l-mm radius, this would amount to about 1 erg, for Tab = 40 ergs/cm. This corresponds roughly to a restoring force of 10 dyn, since this work must be expended in moving the particle out of the interface, and this amounts to a displacement equal to the radius of the particle. [Pg.473]

Unfortunately, the supennolecule approach [81, 82] is full of teclmical diflSculties, which stem chiefly from the very small magnitude of the interaction energy relative to the energy of the supennolecule. Even today, a novice would be ill-advised to attempt such a computation using one of the black-box computer programs available for perfonning ab initio calculations. [Pg.199]

In the simplest model the eoeflfieient K depends only on the differenees of the attraetive energies -e of the nearest-neighbour pairs (these energies are negative relative to those of the isolated atoms, but here their magnitudes e are expressed as positive numbers)... [Pg.628]

The central quantity of interest in homogeneous nucleation is the nucleation rate J, which gives the number of droplets nucleated per unit volume per unit time for a given supersaturation. The free energy barrier is the dommant factor in detenuining J J depends on it exponentially. Thus, a small difference in the different model predictions for the barrier can lead to orders of magnitude differences in J. Similarly, experimental measurements of J are sensitive to the purity of the sample and to experimental conditions such as temperature. In modem field theories, J has a general fonu... [Pg.753]

Mode specificity has also been observed for HOCl—>Cl+OH dissociation [92, 93 and 94]- For this system, many of the states are highly mixed and unassignable (see below). However, resonance states with most of the energy in the OH bond, e.g. = 6, are assignable and have nnimolecnlar rate constants orders of magnitude smaller than the RRKM prediction [92, 93 and 94]- The lifetimes of these resonances have a very strong dependence on the J and K quantum numbers of HOCl. [Pg.1031]


See other pages where Energy magnitudes is mentioned: [Pg.18]    [Pg.738]    [Pg.10]    [Pg.313]    [Pg.518]    [Pg.673]    [Pg.126]    [Pg.22]    [Pg.105]    [Pg.55]    [Pg.220]    [Pg.151]    [Pg.155]    [Pg.595]    [Pg.366]    [Pg.693]    [Pg.700]    [Pg.701]    [Pg.18]    [Pg.738]    [Pg.10]    [Pg.313]    [Pg.518]    [Pg.673]    [Pg.126]    [Pg.22]    [Pg.105]    [Pg.55]    [Pg.220]    [Pg.151]    [Pg.155]    [Pg.595]    [Pg.366]    [Pg.693]    [Pg.700]    [Pg.701]    [Pg.227]    [Pg.357]    [Pg.17]    [Pg.19]    [Pg.51]    [Pg.76]    [Pg.77]    [Pg.126]    [Pg.246]    [Pg.679]    [Pg.820]    [Pg.832]    [Pg.854]    [Pg.1051]    [Pg.1125]    [Pg.1179]    [Pg.1308]    [Pg.1385]    [Pg.1555]    [Pg.1578]    [Pg.1591]    [Pg.1828]   


SEARCH



Activation energy different magnitudes

Activation energy magnitude

Collisional energy transfer magnitude

Correlation energy magnitude

Distortion energy, magnitude

Lattice energy magnitudes

Magnitude

Magnitude of bond energies

Relationships Between Gibbs Free Energy and Other Thermodynamic Magnitudes

Surface energy magnitudes

Thermal energy calculation magnitude

© 2024 chempedia.info