Results 41 to 50 of about 165,933,135 (147)

Corollary from the Exact Expression for Enthalpy of Vaporization [PDF]

open access: yes, 2011
A problem on determining effective volumes for atoms and molecules becomes actual due to rapidly developing nanotechnologies. In the present study an exact expression for enthalpy of vaporization is obtained, from which an exact expression is derived for
A. A. Sobko
core   +1 more source

Estimativa por DSC das entalpias de sublimação da etilenouréia e da propilenouréia: algumas correlações empíricas envolvendo amidas e tioamidas Estimative by DSC data of the sublimation enthalpies for ethyleneurea and propyleneurea: some empirical correlations with amides and tioamides

open access: yesQuímica Nova, 1999
By using DSC data, the enthaplies of sublimation for ethyleneurea and propyleneurea, are calculated as 84 and 89 kJ mol-1 respectively. Using the vaporization enthalpy values for dimethylethyleneurea and dimethylprophyleneurea, as obtained from ...
Robson Fernandes de Farias
doaj   +1 more source

Vaporization, Sublimation Enthalpy, and Crystal Structures of Imidazo[1,2‑a]pyrazine and Phthalazine [PDF]

open access: yes, 2016
The vaporization enthalpy of imidazo[1,2-a]pyrazine is evaluated by correlation gas chromatography using two sets of standards and by transpiration. Vaporization enthalpies were evaluated using heterocyclic standards with dipole moments that vary from 0 ...
Samarov Artemiy A., Verevkin Sergey P.   +2 more
core  

Validation of the Vaporization Enthalpies of Some Simple Aliphatic Amides and Their Use in the Evaluation of the Vaporization Enthalpy of Valpromide and Valnoctamide

open access: yes, 2016
The vaporization enthalpy of valpromide and both diasteriomers of valnoctamide have been evaluated by correlation gas chromatography as has the fusion and sublimation enthalpy of valpromide.
James Chickos (1434607)   +2 more
core   +1 more source

Physicochemical and catalytic behavior of binary mixtures of n-alkyl imidazolium bromide ionic liquids with poly (ethylene glycol)-400: Application of flory statistical theory

open access: yesChemical Physics Impact
In this work, Flory statistical theory is employed to predict the important physicochemical properties namely density, isothermal compressibility, internal pressure, coefficient of volume expansion, energy of vaporization, heat of vaporization, cohesive ...
Anup Kumar   +5 more
doaj   +1 more source

Pressure Dependence of Liquid Vapor Pressure: An Improved Gibbs Prediction [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2001
A new model for the vapor phase of a pressurized liquid called "the cluster model: which is originally introduced in this work, along with an accurate equation of state for the liquid phase called the LIR, is used to derive an accurate equation for the ...
Gholam Abbas Parsafar   +2 more
doaj  

Group Vector Space Method for Estimating Enthalpy of Vaporization of Organic Compounds at the Normal Boiling Point

open access: yes, 2019
The specific position of a group in the molecule has been considered, and a group vector space method for estimating enthalpy of vaporization at the normal boiling point of organic compounds has been developed.
Han Jinyu (2708350)   +2 more
core   +1 more source

I. Latent Heat of Vaporization of n-Hexane. II. Volumetric and Latent Heat of Vaporization Measurements for Trans-2-Butene. III. Partial Enthalpy Change upon Vaporization for n-Butane in the n-Butane-n-Decane System [PDF]

open access: yes, 1964
NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document. I. The enthalpy change upon vaporization of n-hexane was experimentally determined by calorimetric measurements at temperatures ...
Huisman, Johannes
core   +1 more source

A Group Contribution Model for Determining the Vaporization Enthalpy of Organic Compounds at the Standard Reference Temperature of 298 K [PDF]

open access: yes, 2013
Article on a group contribution model for determining the vaporization enthalpy of organic compounds at the standard reference temperature of 298 ...
Ramjugernath, Deresh   +4 more
core   +1 more source

Prediction of the enthalpy of vaporization of metals and metalloids

open access: yes, 2006
A simple correlation equation without adjustable parameters is used to obtain the enthalpy of vaporization of 10 metals and 2 metalloids as a function of the temperature. Besides the critical temperature, this equation requires knowing of the enthalpy of
A Mulero   +3 more
core  

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