Results 241 to 250 of about 166,305,928 (302)
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The enthalpy of formation of the HSO radical
Chemical Physics Letters, 1993Abstract The enthalpy of formation, Δ H 0 f,0 , of the HSO radical has been determined to be −0.9±0.7 kcal/mol from the analysis of high-resolution crossed beam reactive scattering experiments on the reaction O( 3 P)+H 2 S→HSO+H at different collision energies. The results are compared with previous experimental and theoretical estimates.
BALUCANI, Nadia +3 more
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The enthalpy of formation of tetracyanomethane
The Journal of Chemical Thermodynamics, 1973Tetracyanomethane has been burned in a rotating-bomb combustion calorimeter. The standard enthalpy of combustion was Δ H o c (C 5 N 4 , c) = −(616.43 ± 0.4) kcal th mol −1 , which yields a standard enthalpy of formation Δ H o f (C 5 N 4 , c) = −(146.18 ± 0.43) kcal th mol −1 .
D.S. Barnes, C.T. Mortimer, E. Mayer
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The enthalpy of formation of NiAl
Journal of Materials Science, 2005NiAl and NiAl based ternary metallic systems have attracted much attention in recent years for potential use as high temperature structural materials [1–6]. Alloy development of such systems requires a thorough knowledge of the phase equilibria and thermodynamics of the systems. Using high temperature calorimeters [7–9], the enthalpies of formation for
Rongxiang Hu, Philip Nash
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The enthalpy of formation of bromophosgene
The Journal of Chemical Thermodynamics, 1972Abstract The equilibrium between carbon monoxide, bromine, and bromophosgene has been studied in the temperature range 150 to 200 °C. The equilibrium was approached in both directions and a third-law treatment of the results leads to a value of δH o f (COBr 2 ,g,298.15K) =−(27.13±0.12) kcal th mol −1 in good ...
B.K. Dunning, H.O. Pritchard
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Enthalpy of formation of trifluorochloroethene
The Journal of Chemical Thermodynamics, 1982Abstract The standard molar enthalpy of formation of CF2 = CFCl(g) at 298.15 K derived from new measurements of the energy of combustion of liquid samples of the substance is − (505.5 ± 4.7) kJ · mol−1 in satisfactory agreement with two previous indirectly derived values.
P.A. Erastov, V.P. Kolesov
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Enthalpy of Formation of Zircon
Journal of the American Ceramic Society, 1992Using high‐temperature solution calorimetry in molten 2PbO. B 2 O 3 , the enthalpy of reaction of the formation of zircon, ZrSiO 4 , from its constituent oxides has been determined: Δ r
Adam J. G. Ellison, Alexandra Navrotsky
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Enthalpies of formation of lactams
Russian Journal of Physical Chemistry A, 2013Combustion calorimetry is used to measure the enthalpies of combustion and formation of azacyclooctan-2-one (I), azacyclononan-2-one (II), and azacyclotridecan-2-one (III) in the crystalline, liquid, and gaseous states. Conformational analysis is conducted, and quantum chemical calculations of the compounds’ enthalpies of formation in the gas phase for
V. N. Emel’yanenko +3 more
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The enthalpy of formation of ReF4O
Journal of Fluorine Chemistry, 1986Abstract The enthalpy of formation of ReF 4 O(s), determined from the enthalpy of alkaline hydrolysis in the presence of hypochlorite ion, is −1179 ± 4 kJ mol −1 .
J. Burgess, J. Fawcett, R.D. Peacock
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Enthalpies of formation of nitrodiazoles
Russian Chemical Bulletin, 2016The enthalpies of combustion for 3,4,5-trinitro-1Н-pyrazole, 1-methyl-3,4,5-trinitro-1Н-pyrazole, 3,4,5-trinitro-1Н-pyrazole ammonium salt, and ammonium salts of all isomeric dinitropyrazoles and dinitroimidazoles were measured by bomb calorimetry, and the corresponding enthalpies of formation were calculated.
T. S. Kon’kova +5 more
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Enthalpy of formation of Y2Ba4Cu7O14.916
The Journal of Chemical Thermodynamics, 1998The standard molar enthalpy of formation of Y2Ba4Cu7O14.916atT=298.15 K has been determined by solution calorimetry to be: ΔfHm0(Y2Ba4Cu7O14.916, cr, 298.15 K)=(−5465.7±7) kJ·mol−1. During the experiment the molar enthalpies of reaction of the Y2Ba4Cu7O14.916high-temperature superconductor and metallic yttrium with 1.07 N HCl have been measured in a ...
A.S. Monayenkova +4 more
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