โ Scribed by A. Van Itterbeek; O. Verbeke
No coin nor oath required. For personal study only.
IN order to obtain specific heats from the data of sound velocity in liquefied gases under high pressure, we have to make use of the compressibility coefficient of the liquid. However, except for helium and hydrogen, data of this kind are rather rare. Because of this, we have started an investigation on the density variation of liquefied gases such as oxygen, nitrogen, argon, neon, etc., as a function of temperature UR to 150 kgjcm 2 . So far measurements on liquid oxygen between 90 0 K and 65 0 K have been carried out. To a first approximation, a straight line is found for p = f(P). From these measurements we have calculated the variation as a function oftemperature ofthe isothermal
๐ SIMILAR VOLUMES
COMPLETING our systematic investigation on the P, p, T relations of liquefied gases I-3 some measurements have been carried out up to 850 kg/cm 2 on liquid nitrogen and liquid oxygen.
Porous samples of Sm 2 O 3 -doped CeO 2 (samaria-doped ceria, SDC) of composition Sm 0.15 Ce 0.85 O 2-ฤฑ were made by conventional ceramic processing and sintering in air at 1400 โข C. Crystal structure and microstructure of the samples were characterized, respectively, by X-ray diffraction (XRD) and
Saturated densities of liquids are expressed as D, = A -Bt -C/(E -t) over almost the entire ranges for whirh date are available. The constants are presented for 130 pure substances. Liquid density under high pressure can be calculated from saturated density by the equation, log (dP/dt)P = KD -F, who