V-gas

McGregor, D., Brown, A.G., Cattanach, P., Edwards, I., McBride, D., Riach, C., Shepherd, W. Caspary, W.J. (1991) Responses of the L5178Y mouse lymphoma forward mutation assay V. Gases and vapors. Environ, mol. Mutag., 17, 122-129... 

Preheat decomposition can be reduced with the use of the slider-boat substrate holder whereby a quartz slider is used to shield the substrate from gaseous ambients (10). The NTT version (19) allows group V gases to be trapped along with the substrate. However, microscopic decomposition still probably occurs. 

In 1873, van der Waals [2] first used these ideas to account for the deviation of real gases from the ideal gas law P V= RT in which P, Tand T are the pressure, molar volume and temperature of the gas and R is the gas constant. Fie argried that the incompressible molecules occupied a volume b leaving only the volume V- b free for the molecules to move in. Fie further argried that the attractive forces between the molecules reduced the pressure they exerted on the container by a/V thus the pressure appropriate for the gas law isP + a/V rather than P. These ideas led him to the van der Waals equation of state ... 

Unlike (dHldp)j, (dUldV)j, does indeed vanish for real gases as the pressure goes to zero, but this is because the derivative is with respect to V, not because of the difference between U and H. At appreciable pressures (dT/dV)jjis almost invariably negative, because the Joule temperature, at which dfi/dThecomes negative, is extremely high (see figure A2.1.7). 

In 1872, Boltzmaim introduced the basic equation of transport theory for dilute gases. His equation detemiines the time-dependent position and velocity distribution fiinction for the molecules in a dilute gas, which we have denoted by /(r,v,0- Here we present his derivation and some of its major consequences, particularly the so-called //-tlieorem, which shows the consistency of the Boltzmann equation with the irreversible fomi of the second law of themiodynamics. We also briefly discuss some of the famous debates surrounding the mechanical foundations of this equation. 

Bruno G, Capezuttuto P and Losurdo M 1995 On the use of the piasma in iii-V semiconductor processing Phenomena In Ionized Gases (ICPIG Hoboken, NJ, 1995 (AiP Conference Proceedings voi 22) ed K FI Becker, W E Carr and E E Kunhardt (Woodbury, NY American Institute of Physics) pp 146-55... 

Group V. This group includes all the water-insoluble hydrocarbons and oxygen compounds that do not contain N or S and are soluble in cold concentrated sulphuric acid. Any changes—colour, excessive charring, evolution of gases or heat, polymerisation and precipitation of an insoluble compound— attending the dissolution of the substance should be carefully noted. 

Question. The v = I — 0 interval is 4160 for H2 and 2990 for H2. Estimate the wavelength closest to the exciting radiation from an XeCl laser of stimulated Raman shifted radiation for each of the gases. 

V. M. dbsofption of Gases, Israel Program for Scientific Translations, Jemsalem, 1968, Chapt. 3. 

N. V. Tsederberg, The Thermal Conductivity of Gases andEiquids Massachusetts Institute of Technology Press, Cambridge, Mass., 1965. 

The BASF process uses /V-methy1pyrro1idinone as the solvent to purify acetylene in the cracked gas effluent. Alow pressure prescmbbing is used to remove naphthalenes and higher acetylenes. The cracked gas is then compressed to 1 MPa (10 atm) and fed to the main absorption tower for acetylene removal. Light gases are removed from the top of this tower. 

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