摘要:

The microwave spectrum of sulfur dioxide (SO2) is critically reviewed and supplemented with spectral frequency calculations derived from rotational and centrifugal distortion terms in the molecular Hamiltonian. The primary objective of this review is to provide the microwave transition frequencies applicable to molecular radio astronomy for the ground vibrational state of the most abundant isotopic forms, i.e., the singly substituted atoms33S and34S. Also included is an analysis of the lowest lying vibrationally excited state (&ngr;2=1) of32S16O2. The frequency limits and maximum rotational quantum value (J) vary for each isotopic form but for32S16O2the frequency range 100 MHz to 650 GHz is presented forJmax=60.

ISSN:0047-2689    

DOI:10.1063/1.555729

出版商:AIP    

年代:1985

数据来源: AIP

摘要:

A new weighted least‐squares method is described which is generally applicable for the nonsubjective evaluation of the best set of thermodynamic functions from a given data set of equilibrium (&Dgr;G) and calorimetric (&Dgr;H, Cp) measurements. The method, applied to model a wide range of 2428 measurements for the water‐sodium chloride system between −21 and 154 °C, accurately represents all measurements within experimental error. The resulting model is used to predict the thermodynamic functions and their standard errors for aqueous sodium chloride up to 110 °C. Tables are given for freezing point, solubility, boiling point, osmotic and activity coefficients, vapor pressure, apparent molal relative enthalpy, partial molal relative enthalpies, integral heat of solution, specific heat, apparent molal heat capacity, partial molal heat capacities, apparent molal relative heat capacity, partial molal relative heat capacities, standard thermodynamic functions, and their changes for dissolution.

ISSN:0047-2689    

DOI:10.1063/1.555730

出版商:AIP    

年代:1985

数据来源: AIP

摘要:

In this review, the parametersKand &agr; found in the literature for the Mark–Houwink–Sakurada equation relating viscosity to molecular weight have been critically evaluated for linear polyethylene, and values have been recommended for six commonly used solvents. These are decalin, 1,2,4‐tricholorobenzene, 1‐chloronaphthalene, tetralin,o‐dichlorobenzene, andp‐xylene. In addition, the literature values ofKfor several different theta solvents are presented.

ISSN:0047-2689    

DOI:10.1063/1.555751

出版商:AIP    

年代:1985

数据来源: AIP

ISSN:0047-2689    

DOI:10.1063/1.555731

出版商:AIP    

年代:1985

数据来源: AIP