Results 241 to 250 of about 41,155 (321)

The Enthalpy of Fusion of Gallium

Journal of Chemical & Engineering Data, 2002
An adiabatic calorimeter was used to measure the enthalpy of fusion of a very pure sample of gallium. The new value of the enthalpy of fusion was determined to be ΔfusH = 80.097 ± 0.032 J·g-1, where the uncertainty corresponded to a 95% confidence interval. A comparison with previous determinations is made.
D. G. Archer
exaly   +3 more sources

The enthalpy of fusion of anorthite

Contributions to Mineralogy and Petrology, 1980
The high-temperature enthalpies of liquid and glassy CaAl2Si2O8 were measured by drop calorimetry using a diphenyl ether drop calorimeter. These data are combined with published values of the high-temperature enthalpy of crystalline anorthite and the enthalpy of vitrification of anorthite to obtain the enthalpy of fusion of anorthite.
D. F. Weill, J. F. Stebbins, R. Hon, I. S. E. Carmichael   +3 more
openaire   +2 more sources

Enthalpies of solution, enthalpies of fusion and enthalpies of solvation of polyaromatic hydrocarbons: Instruments for determination of sublimation enthalpy at 298.15K

Thermochimica Acta, 2015
Abstract In this work a simple method for calculation of solvation enthalpies of polyaromatic hydrocarbons (PAHs) in various solvents at 298.15 K was proposed. According to this method the enthalpy of solvation of any polyaromatic hydrocarbon in a particular solvent can be calculated on the basis of the general formula of the compound, the solvation ...
Mikhail A Varfolomeev, Ruslan N Nagrimanov, Timur A Mukhametzyanov   +2 more
exaly   +2 more sources

Enthalpy of Fusion of Nematogens

Molecular Crystals and Liquid Crystals, 1977
Abstract The enthalpy of fusion of nematic compounds is an important parameter related to the use of such materials in displays. Since no single material is adequate in nematic range for use in displays, a substantial amount of work is required in preparation and evaluation of mixtures.
Aaron W. Levine, Kazimiera D. Tomeczek
openaire   +2 more sources

Enthalpy of fusion and temperature of fusion of indium, and redetermination of the enthalpy of fusion of tin

The Journal of Chemical Thermodynamics, 1993
Abstract The molar enthalpy and temperature of fusion of a very pure sample of indium have been determined by adiabatic-shield calorimetry for the Laboratory of the Government Chemist, U.K. with the result: Δ fus H m = (3296±9) J·mol -1 . Fractional-enthalpy-of-fusion determinations over the region (13.4 to 88.0) per cent molten indium are ...
F. Grønvold
openaire   +2 more sources

Direct measurement of the enthalpy of fusion of diopside

Geochimica et Cosmochimica Acta, 1986
Crystalline diopside, CaMgSi2O6, was dropped directly into a Setaram “HT1500” calorimeter operating at high temperature. At 1575 < T < 1624 K, the heat content of the crystals was in excellent agreement with previously published results. Above 1634 K, a rise in the enthalpy was seen, supporting the incongruent melting reported by Kushiro.
David Ziegler, Alexandra Navrotsky
openaire   +2 more sources

Heat Capacity and Enthalpy of Fusion of Fenoxycarb

Chinese Journal of Chemistry, 2005
AbstractFenoxycarb was synthesized and its heat capacities were precisely measured with an automated adiabatic calorimeter over the temperature range from 79 to 360 K. The sample was observed to melt at (326.31±0.14) K. The molar enthalpy and entropy of fusion as well as the chemical purity of the compound were determined to be (26.98±0.04) kJ·mol‐1 ...
Sun Xiao‐Hong, Liu Yuan‐Fa, Tan Zhi‐Cheng, Jia Ying‐Qi, Yang Jian‐Wu, Wang Mei‐Han   +5 more
openaire   +2 more sources

On the Relation of Entropy and Enthalpy of Fusion in Triglycerides

European Journal of Lipid Science and Technology, 2021
Julia Seilert, Eckhard Floeter
exaly   +2 more sources

Determination of the enthalpy of fusion of K3TaO2F4 and KTaF6

Chemical Papers, 2009
AbstractAreas of fusion and crystallization peaks of K3TaO2F4 and KTaF6 were measured using the DSC mode of a high-temperature calorimeter (SETARAM 1800 K). On the basis of these quantities, considering the temperature dependence of the calorimeter sensitivity, values of the fusion enthalpy of K3TaO2F4 at the fusion temperature of 1181 K of (43 ± 4) kJ
Zuzana Netriová
exaly   +2 more sources

Enthalpy of uranium tetrafluoride from 298–1400°K: enthalpy and entropy of fusion

Journal of Inorganic and Nuclear Chemistry, 1972
Abstract The enthalpy of UF 4 from room temperature up into the liquid phase has been measured in order to clarify some questionable thermochemical behavior reported in the literature. Our measured entropy of fusion for UF 4 of 8·6 cal °K −1 mol −1 is considerably lower than the 12·7 cal °K −1 mol −1 reported for the isostructural compound ZrF ...
A. Dworkin
openaire   +2 more sources