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Thermal diffusion data in the critical region have been obtained for the system ethane‐xenon using very low xenon concentrations and Xe 133 as a tracer. The results indicate that even at pressures as low as four atmospheres and temperatures twenty degrees above the critical, the simple kinetic...
The anomalous electrical response at low frequencies previously observed in pure ionic crystals has been studied in ionic crystals containing foreign ions. Measurements of the dielectric loss at one kc as a function of temperature have been made on four salts with a variety of foreign ions at...
The reaction between hydrogen peroxide and hydrogen has been studied in the temperature range 470 to 500°C. The dependence of reaction rate on concentrations is rather complicated for hydrogen, and is between first and second order for hydrogen peroxide. The evidence presented favors the...
The vapor pressure of americium from a dilute solution in plutonium has been measured by a modification of the Knudsen effusion method. The resulting vapor pressure for pure americium in the temperature range 1450°K to 1820°K is given by the equation log 10 p mm =7.02—(11,300)/ T . The vapor...
Infra‐red spectra are compared for equivalent absorbing paths of methyl chloroform (1,1,1‐trichloroethane) as vapor at 25°, liquid at −28°, solid I at −40° and solid II at −55°C. The spectra differ in the respects: (1) P‐Q‐R branches observed on some bands in the vapor disappear...
The log of the force constants of the ground electronic states of all available diatomic hydrides is plotted versus the log of the atomic number of the element to which the hydrogens are bonded. A definite periodicity associated with the periods in the periodic table results. This periodicity is...
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