Results 231 to 240 of about 2,532,436 (279)
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The Journal of Chemical Thermodynamics, 1991
The vapour pressure of solid UCl4 has been measured by the transpiration technique at temperatures from 699 K to 842 K. The results can be represented by 1 g ( p / P a ) = − ( 10084 ± 175 ) ( T / K ) − 1 + ( 14.878 ± 0.227 ) . A third-law analysis yields for the molar enthalpy of sublimation ΔsubH°m(298.15 K)
E.H.P. Cordfunke, R.J.M. Konings
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The vapour pressure of solid UCl4 has been measured by the transpiration technique at temperatures from 699 K to 842 K. The results can be represented by 1 g ( p / P a ) = − ( 10084 ± 175 ) ( T / K ) − 1 + ( 14.878 ± 0.227 ) . A third-law analysis yields for the molar enthalpy of sublimation ΔsubH°m(298.15 K)
E.H.P. Cordfunke, R.J.M. Konings
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The vapour pressure of naphthalene
The Journal of Chemical Thermodynamics, 1975Abstract Measurements of the vapour pressure of naphthalene over the temperature range 263 to 343 K are reported. These have been correlated with data from the literature, and an equation is given from which recommended values are calculated for the vapour pressure of solid naphthalene from 230 K to the triple point. An equation is given also for the
D. Ambrose +2 more
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The vapour pressure of chlorine
The Journal of Chemical Thermodynamics, 1979Abstract The vapour pressure of chlorine was measured in the ranges 206 to 270 K and 334 to 417 K, and the values found were fitted by equations applicable from the triple point to the critical point. The results of the present work are compared with those previously available.
D Ambrose +4 more
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The Measurement of Vapour Pressure
1984Vapour pressure measurements may be undertaken for a variety of reasons, for example, the nature of a surface and its influence on evaporation and condensation may be studied as may also the diffusion coefficient of the evaporated species in air.
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Vapour pressure of methylfluoride
Physica, 1948Abstract The vapour pressure of CH 3 F has been measured between — 110°C and + 15°C. The temperature was measured with a Pt-resistance thermometer, the pressure up to 4 atm. against a mercury column and for higher pressures with a pressure balance. A diagramatical sketch of the apparatus used is given in fig. 1.
A Michels, T Wassenaar
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Canadian Metallurgical Quarterly, 1984
AbstractThe sublimation pressure of pure arsenic was measured by a transportation method in the temperature range 675–730 K. The specimen and carrier argon gas were carefully prepared to eliminate oxygen. The arsenic tetramer (As4) was assumed to be the dominant gaseous species evaporated from pure solid arsenic.The vapour pressure for the process As(s)
R. Celmer, M. Yamamoto, J. M. Toguri
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AbstractThe sublimation pressure of pure arsenic was measured by a transportation method in the temperature range 675–730 K. The specimen and carrier argon gas were carefully prepared to eliminate oxygen. The arsenic tetramer (As4) was assumed to be the dominant gaseous species evaporated from pure solid arsenic.The vapour pressure for the process As(s)
R. Celmer, M. Yamamoto, J. M. Toguri
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Pesticide Science, 1986
AbstractThe vapour pressures of the separate isomers of permethrin have been determined over a range of temperatures by two laboratories using different versions of the gas saturation method. A statistical analysis of the sets of data from the two laboratories shows no significant differences for the cis isomers but a small difference in the 20°C ...
David Wells +2 more
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AbstractThe vapour pressures of the separate isomers of permethrin have been determined over a range of temperatures by two laboratories using different versions of the gas saturation method. A statistical analysis of the sets of data from the two laboratories shows no significant differences for the cis isomers but a small difference in the 20°C ...
David Wells +2 more
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New vapour-pressure measurements and a new rational vapour-pressure equation for oxygen
The Journal of Chemical Thermodynamics, 1976Abstract New experimental vapour pressures of oxygen are presented for the temperature range from 90 K up to the critical temperature Tc = 154.581 K. In comparison with these results, oxygen vapour-pressure measurements reported in the literature have been critically evaluated with the aim of obtaining a data set that represents the “true” vapour ...
W. Wagner, J. Ewers, W. Pentermann
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Physica, 1951
Abstract The vapour pressure of argon from pressures below 1 atmosphere to the critical point has been measured independently by observers in London and Amsterdam. At London the temperature was determined from the vapour pressures of oxygen. The cryostat and other apparatus used there is described.
A.M Clark +5 more
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Abstract The vapour pressure of argon from pressures below 1 atmosphere to the critical point has been measured independently by observers in London and Amsterdam. At London the temperature was determined from the vapour pressures of oxygen. The cryostat and other apparatus used there is described.
A.M Clark +5 more
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Nature, 1931
IN considering the effect of polarity on the vapour pressure and association of a liquid, a simple case is its influence on the partial vapour pressures of a polar liquid in its binary mixtures with a non-polar liquid, which, except for lack of polarity, should preferably be closely related in chemical structure to the polar liquid.
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IN considering the effect of polarity on the vapour pressure and association of a liquid, a simple case is its influence on the partial vapour pressures of a polar liquid in its binary mixtures with a non-polar liquid, which, except for lack of polarity, should preferably be closely related in chemical structure to the polar liquid.
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