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Liquid Measure Compound Equivalents

For direct conversions between metric and U.S. customary units, use the following tables. However, if you intend to convert an entire U.S. customary formula using 32 ounces of liquid to a metric formula using 1 liter, or vice versa, use the compound equivalents following these tables. To convert an individual measure, use the direct equivalents. [Pg.323]

Another method to obtain enthalpies of formation of compounds is by solute-solvent drop calorimetry. This method was pioneered by Tickner and Bever (1952) where the heat formation of a compound could be measured by dissolving it in liquid Sn. The principle of the method is as follows. If the heat evolved in the dissolution of compound AB is measured, and the equivalent heat evolved in the dissolution of the equivalent amount of pure A and B is known or measured, the difference provides the enthalpy of formation of the compound AB. Kleppa (1962) used this method for determining enthalpies of formation of a number of Cu-, Ag- and Au-based binaries and further extended the use of the method to high-melting-point materials with a more generalised method. [Pg.84]

N.m.r. relaxation studies by Alexandre and Rigny117 have yielded information on the difference in chemical shifts between the non-equivalent fluorines and the rate of exchange between them. New 1 1 adducts of C10F3 with a number of pentafluorides MF5 (M = P, V, Ta, Nb, or Bi) have been obtained and characterized by X-ray powder diffraction measurements.118 The essentially ionic nature of these compounds was confirmed by means of their vibrational spectra. Solution studies in liquid HF allowed a more confident assignment of some of the cation vibrations. [Pg.482]

The linewidth that one would obtain if one tried to measure C NMR spectra of solid samples in the same way as liquid samples would be approximately 20,000 Hz. This linewidth is approximately equivalent to the total chemical shift range for most organic compounds. Therefore it is apparent that it is not possible to obtain useful chemical shift information in this way. [Pg.575]

In an extensive work on polysiloxane polymer liquid crystals, Finkelmann et al. examined their performance in a twisted nematic electro-optical cell. In parallel with the polymer measurements, analogous studies were carried out on low molar mass nematic compounds of equivalent dielectric anisotropy (Ae). Both the low molar mass nematic materials and the polymer side-group moieties were mixtures of methoxy- (or alkyloxy-) and chlorine-terminated benzoate esters. Cells were prepared using rubbed polyimides and in the polymer case the samples were annealed for several hours to obtain defect-free aligned textures. Measurement of the threshold voltages, for both the low molar mass compounds and the polymer, showed ... [Pg.314]

Most of the measurements on diffusivities of compounds in the liquid phase, in catalyst pores, have been made with small molecules. Recently Chantong and Massoth [26] measured diffusivities of non-metallic porphyrin molecules. Baltus and Anderson [27] made diffusivity measurements using narrow molecular weight fractions of a petroleum residuum. In their work tetrahydrofuran asphaltenes were separated into five fractions by gel permeation chromatography. The polystyrene equivalent average molecular weights they reported were 3000, 6000, 12000, 24000, and 48000. [Pg.63]


See other pages where Liquid Measure Compound Equivalents is mentioned: [Pg.328]    [Pg.328]    [Pg.1912]    [Pg.224]    [Pg.73]    [Pg.186]    [Pg.154]    [Pg.19]    [Pg.398]    [Pg.400]    [Pg.491]    [Pg.587]    [Pg.1082]    [Pg.87]    [Pg.147]    [Pg.540]    [Pg.192]    [Pg.92]    [Pg.154]    [Pg.10]    [Pg.400]    [Pg.222]    [Pg.150]    [Pg.4]    [Pg.238]    [Pg.1912]    [Pg.83]    [Pg.268]    [Pg.49]    [Pg.4]    [Pg.100]    [Pg.658]    [Pg.18]    [Pg.132]    [Pg.345]    [Pg.112]    [Pg.315]    [Pg.235]    [Pg.11]    [Pg.142]    [Pg.148]    [Pg.109]    [Pg.353]    [Pg.132]    [Pg.458]   


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