منابع مشابه
Molecular Weight by Boiling Point Elevation
This experiment demonstrates the use of colligative properties. The goal is to measure the molecular weight of a non-volatile solute by determining the concentration dependence of the boiling point elevation of a solution. The solvent used must be one of the compounds commonly referred to as volatile; that is, it must have an appreciable vapor pressure. One of the several useful aspects of coll...
متن کاملPrediction of boiling point and water solubility of crude oil hydrocarbons using sub-structural molecular fragments method
The quantitative structure–property relationship (QSPR) method is used to develop the correlation between structures of crude oil hydrocarbons (80 compounds) and their boiling point and water solubility. Sub-structural molecular fragments (SMF) calculated from structure alone were used to represent molecular structures. A subset of the calculated fragments selected using stepwise regression (fo...
متن کاملFrench researchers at boiling point
Over 30,000 French scientists have signed an online petition to " save research " set up last month, with a pledge to stop their administrative duties unless the government starts listening to their complaints about funding. There is one signature for every minute that has passed since the petition — aiming to save the French public research base from the latest cuts imposed by the government —...
متن کاملBiodiesel Production, Lubricant Fractionating and Development of a New True Boiling Point Curve through Molecular Distillation
Maciel Filho, R., Lima Silva, N., Batistella, C. B., Wolf Maciel, M. R., Winter, A., Sbaite, P., Medina, L. Separation Process Development Laboratory, (LDPS); Laboratory of Optimization, Design and Advanced Control (LOPCA); School of Chemical Engineering, State University of Campinas, (UNICAMP), Cidade Universitária Zeferino Vaz CEP. 13081970, CP. 6066, Campinas, S.P., Brasil CENPES/PETROBRAS, ...
متن کاملThe Molecular Weight and Isoelectric Point of Thyroglobulin
1. The sedimentation constant of hog thyroglobulin is 19.2c10(-13). That of human thyroglobulin is essentially the same. 2. The specific volume of hog thyroglobulin is 0.72. 3. The isoelectric point of native hog thyroglobulin is at pH 4.58, that of denatured thyroglobulin at pH 5.0. 4. The molecular weight of hog thyroglobulin is, in round numbers, 700,000, as calculated from the sedimentation...
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ژورنال
عنوان ژورنال: Journal of Chemical Education
سال: 1996
ISSN: 0021-9584,1938-1328
DOI: 10.1021/ed073pa294.1