The molar mass dependence of the concentration dependent part of D c was also calculated from the zero concentration extrapolated values with the corresponding effective hydrodynamic radii. For the calculations the Pyun-Fixman theory was applied which regards the polymer coils as soft, interpenetrable ...
NaCl 1.87 View Solution A certain solution of1mbenzoic acid in benzene has a freezing point of3.1∘Cand a normal boiling point of82.6∘C. The freezing point of benzene is5.5∘C. And its boiling point is80.1∘C. Analyze the state of the solute (benzoic acid ) at two temperatur...
Each backbone PE repeating C2H4 unit and chain-end C2H5 unit were mapped as ETH and ETS beads with masses of 28.0532 and 29.0611 g mol−1, respectively. The center of mass was maintained in the mapping procedure. A set of potentials capable of describing the coarse-grained linear PE...
polymers Article The Effect of Molar Mass and Charge Density on the Formation of Complexes between Oppositely Charged Polyelectrolytes Feriel Meriem Lounis, Joseph Chamieh, Laurent Leclercq, Philippe Gonzalez and Hervé Cottet * Institut des Biomolécules Max Mousseron, IBMM, UMR 5247 CNRS, Université...
C14H16N2O3的摩尔质量和分子量为{1,数字}。 由Phetharbital - C14H16N2O3组成 元素标志原子质量原子#质量百分比 碳 C 168.1498 g/mol 14 64.6013% 氫 H 16.127 g/mol 16 6.1958% 氮 N 28.0134 g/mol 2 10.7624% 氧 O 47.9982 g/mol 3 18.4404% Phetharbital 元素 质量百分比碳168.15g碳168.15g氧47.9...
The effects on V/and Cp,/of methyl-group substi- tution to urea are outlined. 2. Experimental Solid urea (Spectrum, lot RL0033 U1016, molar mass M2= 60.055 g Æ mol?1, stated purity 100.0%), 1,1-dimeth- ylurea (Sigma, batch 122K0070 U1016, M2= 88.108 g Æ mol?1, ...
CollegeofChemistryandChemicalEngineering,LiaochengUniversi Liaocheng252059,China (Received4August2010;revisedmanuscriptreceived8September2010) Thispaperreportsthati-dodecylaminehydrobromide(1C12H25NH3·Br)(s)hasbeensynthesizedusingthe liquidphasereactionmethod.Thelatticepotentialenergyofthecompound1一CI2H25NH3·Brand...
Open or closed geochemical systems during diagenesis in sedimentary basins- Constraints on mass transfer during diagenesis and the prediction of porosity in sandstone and carbonate reservoirs 热度: Report on applying coal gasification technology in China´s coal chemical industry. 热度: ...
Densities of (NH4)2SO4, K2SO4 and Al2(SO4)3 have been measured in dimethylsulphoxide(DMSO) + water, containing 0,5,10,15 and 20 mass % of DMSO, at different concentrations and at 298.15, 303.15, 308.15 and 313.15 K. From these densities, apparent molar volumes have been derived. The...
In addition to the chemical structure, the molecular mass distribution of a polymer is also an important characteristic related to the performance of the resin. The light scattering and gel-permeation chromatograph (GPC) were used to determine the molecular mass distribution of UF resin in the ...