Magnetic molar

If the optical activity is induced by an external magnetic field it is proportional to the magnetic field strength, and one measures magnetic circular dichroism (MCD), commonly expressed as magnetic molar ellipticity per gauss. 

Fig. 25. Temperature dependence of the reciprocal magnetic molar susceptibility of MnPS3 (a), Mno.89 PS3 (methyl-tris-octyl- )o.22 (b), Mng 83PS3...

M magnetization molar mass mutual inductance torque ... 

M magnetization, molar mass, mutual inductance, torque, angular momentum component... 

Curie-Weiss law The molar magnetic susceptibility of a substance may be represented... 

Magnetic dipole moment of a molecule m, fJL Molar (decadic) absorption coefficient e... 

Magnetic field strength H Molar ionic conductivity A, A... 

Neutron magnetic moment Partial molar quantity A... 

The systems of interest in chemical technology are usually comprised of fluids not appreciably influenced by surface, gravitational, electrical, or magnetic effects. For such homogeneous fluids, molar or specific volume, V, is observed to be a function of temperature, T, pressure, P, and composition. This observation leads to the basic postulate that macroscopic properties of homogeneous PPIT systems at internal equiUbrium can be expressed as functions of temperature, pressure, and composition only. Thus the internal energy and the entropy are functions of temperature, pressure, and composition. These molar or unit mass properties, represented by the symbols U, and S, are independent of system size and are intensive. Total system properties, J and S do depend on system size and are extensive. Thus, if the system contains n moles of fluid, = nAf, where Af is a molar property. Temperature... 

Physical Methods of Examination. Physical methods used to examine coals can be divided into two classes which, in the one case, yield information of a stmctural nature such as the size of the aromatic nuclei, ie, methods such as x-ray diffraction, molar refraction, and calorific value as a function of composition and in the other case indicate the fraction of carbon present in aromatic form, ie, methods such as ir and nuclear magnetic resonance spectroscopies, and density as a function of composition. Some methods used and types of information obtained from them are (41) ... 

Tetrabutylammonium fluoride trihydrate (Aldnch) is heated in a round-bottom flask with magnetic stirring at 40-45 C under vacuum (<0.1 mm of Hg) After several hours, the sample liquefies. Heating is continued until the sample loses 20% of its original weight (usually ca 48 h). The resulting anhydrous TBAF (singlet at -99 ppm, F NMR) contains 0 1-03 molar equivalent of water (by NMR) and ca 10% tetrabutylammonium bifluoride (a doublet at -146 ppm, (J = 123 Hz, F NMR) This oil must be used immediately. 

Other physical methods were also applied to the elucidation of the isomerism of diazocyanides, e. g., determination of diamagnetic susceptibility, the Faraday effect (optical rotation in a magnetic field), and electronic and infrared spectra. Hantzsch and Schulze measured ultraviolet spectra at a remarkably early date (1895 a). Unfortunately, their results and later work (Le Fevre and Wilson, 1949 Freeman and Le Fevre, 1950) did not allow unambiguous conclusions, except perhaps the observation that the molar extinction coefficients of the band at lowest frequency are consistently larger in all types of (i -compounds Ar — N2 - X than in the corresponding (Z)-iso-mers (Zollinger, 1961, p. 62). 

Lithium oxides of Pu, magnetic measurements and reciprocal molar susceptibility vs. 

A typical polyester molecule has 50 to 100 repeat units and a molar mass between 10,000 and 20,000 g/mol. PET can be formed into fibers (such as Dacron) or films (such as Mylar). Mylar films, which can be rolled into sheets 30 times thinner than a human hair, are used to make magnetic recording tape and packaging for frozen food. Dacron is best known for its use in clothing, but it has many other applications. For example, tubes of Dacron are used as synthetic blood vessels in heart bypass operations because Dacron is inert, nonallergenic, and noninflammatory. 

There have been no reports of complexes of " JV-substituted thiosemicarbazones derived from 2-formylpyridine, but 2-acetylpyridine JV-methyl-thiosemicarbazone, 3a, formed [Fe(3a-H)2]C104 and [Fe(3a-H)2]FeCl4 [117]. The nature of these two species was established by partial elemental analyses, molar conductivities, magnetic moments, electronic, infrared, mass and electron spin resonance spectra. A crystal structure of a related selenosemicarbazone complex confirmed the presence of a distorted octahedral iron(III) cation coordinated by two deprotonated anions so that each ligand is essentially planar and the azomethine nitrogens are trans to each other the pyridyl nitrogen and selenium donors are both cis. 

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