activation energy in English
The energy that is required to activate molecules for a chemical reaction is the activation energy of the reaction.
Use "activation energy" in a sentence
1. This initial kick- start is known as activation energy.
2. Two particular values of the apparent activation energy are also defined.
3. Microscopic activation energy of hardened cement paste is calculated from relaxation experiments.
4. This activation energy depends on the curing conditions (temperature, illumination or not).
5. The activation energy was calculated by regression analysis or the following equation
6. Key words: capillary electrophoresis, surfactant, acid hydrolysis, tetradecanedisulfate, activation energy, entropy of activation.
7. lowercase b moles of capital B molecule, and you have some activation energy.
8. The activation energy in a specified range of temperature for the material is estimated.
9. You know that Catalysts lower the activation energy required for a reaction to occur.
10. This reaction is diffusion controlled with an activation energy of 44.4 kJ mol−1.
11. The activation energy for the overall process was relatively low, 35 kJ mol−1.
12. Typically, Anabolic and catabolic reactions are coupled, with catabolism providing the activation energy for anabolism.
13. The curves have been used for the calculation of the activation energy and reaction order.
14. Typically, anabolic and catabolic reactions are coupled, with catabolism providing the activation energy for Anabolism.
15. The activation energy of conduction was 0.77 eV and the oxygen partial pressure coefficient was −0.16.
16. It has an activation energy of about 23–24 kcal/mole and nearly zero activation entropy.
17. Striking mechanism for a watch or a music box with a keyboard having optimised activation energy
18. The activation energy for the transport of water corresponds to the energy of the hydrogen bonding.
19. The order, activation energy and apparent activation entropy of the thermal decomposition reaction have been elucidated.
20. [3]. The activation energy of hydration on α-alumina was calculated to be ca. 24 kcal/mole.
21. So, catalysts work by lowering the activation energy barrier for both the forward and the reverse reaction.
22. Seebeck coefficient, d.c. resistivity, activation energy, drift mobilityΜ and time constant measurements are presented for all samples.
23. Figure 4 shows the straight that allows us to calculate the activation energy ([E.sub.a]) of the Acetates
24. Activation energy and pre-exponential factors have been determined by Coats-Redfern model and Dixit-Ray model.
25. The activation energy for dehydration of these four compounds has been calculated using non-isothermal thermogravimetric data.
26. Then the dielectric absorptions of polyvinylidene chloride and polyvinyl chloride were compared in respect to their magnitude, shape and apparent activation energy, where in magnitude the former was smaller than the latter, in shape broader and in apparent activation energy smaller.
27. The activation energy for thermal dehydroxylation in vacuum of alkaline-earth hydroxides has been calculated from thermogravimetric data.
28. The reaction ordern=1 and the values of the activation energy agreed with the results of isothermal experiments.
29. Catalysts permit an alternate mechanism for the reactants to become products, with a lower activation energy and different transition state
30. The temperature dependence of the pulse can be described by a thermal activation energy characteristic of the energy of lattice vibrations.
31. According to the speed of coal oxidation, doing the theory research on spontaneous combustion period based on activation energy with standard situation.
32. The apparent activation energy that describes the temperature dependence of spin-lattice relaxation for all nuclei studied is approximately 1.6 kcal mol−1.
33. The coefficient of a binary solution, like that of a single liquid, can be expressed as an exponential function of activation energy and temperature.
34. The change of the degree of crystallinity had no great effect upon the apparent activation energy for dielectric response and the shape of theβ-absorption.
35. Dielectric studies below 100 K give, for reorientation of the NF3 dipole in the structure I cages, an average activation energy of 0.79 kcal mol−1.
36. The electric field creates the dipole moment in the dielectric layer and the heat helps increase the speed of the process by supplying additional activation energy.
37. A radiationless process obeying an Arrhenius law with an activation energy between 0.03 and 0.33 eV depending on the lattice, quenches the fluorescence at high temperature.
38. A better agreement is found in the geometry between semiempirical and ab initio transition states, and a greater deviation in the activation energy,(Sentencedict.com ) in which.
39. The dependences of the layer thickness, activation energy, enthalpy and entropy of the bonded watervs. the amount of TDACl previously deposited on the marble surface were determined.
40. The rate limiting velocities correspond to an apparent activation energy of 8000±1000 cal/mole, in essential agreement with values reported for crack growth in similar steels.
41. The activation energy is calculated from the slope of the logarithm of the maximum peak height of the isothermal DTA trace versus the reciprocal of the absolute temperature.
42. However, the activation energy of Cementite precipitation decreases from 179.4 kJ/mol to 94.7 kJ/mol, proving that tensile stress could reduce the energy barrier of Cementite precipitation
43. Conclusions about the solution's structure can be obtained from the activation energy, enthalpy and entropy of the flow and their dependence on the concentration and the shear stress.
44. Non-isothermal thermogravimetric measurements were employed to obtain values of experimental activation energy and entropy for the dehydration of CuSO4 · 5 H2O, CuSO4 · 3 H2O and CuSO4 · H2O.
45. The relation between the activation energy, the enthalpy and the entropy of the bonded water and the amount of TDAHCl previously deposited on the bare mineral surfaces was determined.
46. The activation energy,Ea, the entropy change, ΔS°, the enthalpy change, ΔH° and Gibbs free energy, ΔG° are calculated by applying the rate theory of the first-order reaction.
47. It is suggested that the activation entropy as well as the activation energy should be considered in explaining the kinetic deuterium isotope effect in the thermal dehydration of Li2SO4·H2O.
48. It was possible to calculate the diffusion co-efficients and the activation energy of diffusion of IRGANOX 1330 in iPP by measuring the oxidation maximum times across stacks of isotactic polypropylene sheets.
49. In transition-state theory, the Activation energy is the difference in energy content between atoms or molecules in an activated or transition-state configuration and the corresponding atoms and molecules in their initial configuration.
50. We present a detailed account of photoluminescence measurements, including thermal activation energy and transient luminescence decay time results, on isoelectronic bound excitons associated with complex binding centers containing either of the deep acceptors In or Tl.