Results 11 to 20 of about 80,336 (288)
Comparison of methods for calculating the enthalpy of vaporization of binary azeotropic mixtures
Тонкие химические технологииObjectives. To calculate the molar enthalpy of vaporization of binary homogeneous mixtures based on isothermal and isobaric vapor–liquid equilibrium data, and to compare the results of calculation of molar enthalpy of vaporization by different methods ...
D. A. Ryzhkin, V. M. Raeva
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Enthalpy model for heating, melting, and vaporization in laser ablation
Electronic Journal of Differential Equations, 2010 Laser ablation is used in a growing number of applications in various areas including medicine, archaeology, chemistry, environmental and materials sciences.
Vasilios Alexiades, David Autrique
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Evaluation of the Temperature Dependence of Vaporization Enthalpy and its Correlation with Surface Tension by Machine Learning and Predictive Correlations [PDF]
, 2021 Temperature dependence of vaporization enthalpy is one of the most important thermophysical properties of compounds. In the present study, we theoretically developed relationships applicable to evaluation of vaporization enthalpy of compounds from ...
Amin, Alibakhshi, Bernd, Hartke
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An investigation of edge F-index on fuzzy graphs and application in molecular chemistry
Complex & Intelligent Systems, 2022 The molecular descriptors are a useful tool in the spectral graph, molecular chemistry and several fields of chemistry and mathematics. The edge F-index is proposed for fuzzy graphs (FGs) here. Bounds of this index are calculated for FGs. The FG has been
Sk Rabiul Islam, Madhumangal Pal
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Isotherms and thermodynamic properties of water adsorption in ‘Cumari-do-Pará’ pepper seeds [PDF]
Revista Brasileira de Engenharia Agrícola e Ambiental, 2020 Studies related to water sorption in seeds are essential for the design and optimization of storage systems. The objective of this research was to determine and model the adsorption isotherms and calculate the latent heat of water vaporization ...
Karen C. Rodrigues +5 more
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Vapor Pressures and Enthalpies of Vaporization for Toxaphene Congeners [PDF]
Journal of Chemical & Engineering Data, 2003 Subcooled saturation liquid-phase vapor pressures (PL) were determined for 21 chlorinated bornane and camphene congeners by capillary gas chromatography. Values of PL for congeners with 6−10 chlorine substituents at 25 °C ranged from (0.23 to 7.1) mPa, and enthalpies of vaporization (ΔvapH) ranged from (77.6 to 91.8) kJ·mol-1.
Terry F. Bidleman +2 more
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Sharp Bounds of First Zagreb Coindex for F-Sum Graphs
Journal of Mathematics, 2021 Let G=VE,EG be a connected graph with vertex set VG and edge set EG. For a graph G, the graphs S(G), R(G), Q(G), and T(G) are obtained by applying the four subdivisions related operations S, R, Q, and T, respectively. Further, for two connected graphs G1
Muhammad Javaid +3 more
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Entropy, 2021 Liquefied Natural Gas (LNG) must be vaporized before it is used in the combustion process. In most regasification terminals, energy that was previously expended to liquefy natural gas is dissipated in the environment.
Tomasz Banaszkiewicz
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A Modified Alpha Function for Peng-Robinson Cubic Equation of State
Chemical Engineering Transactions, 2020 A piecewise alpha function was proposed for the Peng-Robinson equation of state (PR EoS) to predict the thermodynamic properties of pure compounds. The proposed alpha function and its derivations satisfied the requirement of consistency test.
Wenying Zhao +4 more
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Química 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
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