Report of the Board of Regents Volume 42, No. 1

Report of the Board of Regents Volume 42, No. 1

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1889 edition. Excerpt: ...the absolute critical temperature and the pressure is constant. The other substances deviate from it, giving ratios which increase with molecular complexity. (J. Phys, February, 1886, II, v, 58.).. Subsequently these authors extended their observations to include propyl chloride, the three ethylamines, and the two lower normal propylamines, all liquid at the ordinary temperature. Their results confirmed those above mentioned, that the absolute critical temperature increased with molecular complexity somewhat more rapidly than the critical pressure. Moreover the critical temperatures and pressures of isomeric substances are far from being equal. (C. E., August, 1886, cm, 379.) In a lecture at the Royal Institution, Frederick Siemens discussed the phenomena of dissociation with especial reference to questions connected with practical heat operation. (Nature, May, 1886, xxxiv, 64.) Wroblewski has determined the density of liquified atmospheric air as well as that of its component gases, by measuring the volume of gas given by a known volumeof the liquid. At thecritical temperature--118, the density of liquid oxygen is 0.6; while at--200, at a pressure of only 2 centimeters, the density is 1.24. Hence its atomic volume is less than 14. The density of liquid nitrogen at--146.6, the pressure of its saturated vapor being 32 atmospheres, was found to be 0.4552; while at--793, under a pressure of one atmosphere, the density was 0.83; and at--202, with a pressure of 0.105 atmospheres it was 0.866. The atomic volume is then about 15.5. Its expansion coefficient is 0.0311 at--153.7, 0.007536 at--193, and 0.004619 at-202. Atmospheric air on compression behaves like a mixture whose components followed different laws of liquefaction; and when liquified...show more

Product details

  • Paperback | 356 pages
  • 189 x 246 x 19mm | 635g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236945689
  • 9781236945686