volume‚ urea would yield a slower hemolysis time than ethylene glycol. These results‚ however‚ do support the work of Mayrand et. al. (1983)‚ who performed an experiment testing the inhibiting abilities of urea on ethylene glycol and osmotic permeability and the inhibiting abilities of ethylene glycol on ethylene glycol permeability. The results of their experiment revealed that urea has a permeability of (1.16 ± 0.05) x 10-3 cm/s while ethylene glycol has a permeability of (4.8 ± 0.2) x 10-4 cm/s
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commercial polypropylene is isotactic and has an intermediate level of crystallinity between that of low-density polyethylene (LDPE) and high-density polyethylene (HDPE). Polypropylene is normally tough and flexible‚ especially when copolymerized with ethylene. This allows polypropylene to be used as an engineering plastic‚ competing with
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symptoms to what Ryan was having before he passed. There is a compound found in MMA that could have been misidentified as ethylene glycol called propionic acid. These two chemicals have similar characteristics such as both being colorless‚ combustible and moderately toxic if ingested or absorbed. These two chemicals can be easily mixed up‚ especially when one is expecting to find ethylene glycol and not knowing of the possibility of another substance being present. The handling of the blood work is also
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to describe the molar volume of pure water the equation V_3=M_3⁄ρ_(3 ) is used‚ whereas those of sodium nitrate and the polyether compound poly(ethylene glycol) (PEG) are shown by V_1=V_(∅_1)^∞and V_1=V_(∅_2)^∞. In these two equations‚ V_(∅_1)^∞ and V_(∅_2)^∞ which are the apparent molar volumes at infinite dilution of sodium nitrate and poly(ethylene glycol)‚ must be computed on the basis of data on apparent molal volume (V_∅). The following equation shows the relation of the V_∅ of a binary solution
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point was done by using melting point apparatus. The melting point of the unknown sample #10 was 111.5˚C. There were two possible compounds which were dibenzoyl ethylene and o-Toluic acid because their melting points were 111.2˚C and 109.8˚C when each compound was mixed with the unknown. Therefore‚ the unknown #10 was dibenzoyl ethylene. Introduction The melting point is defined as the temperature at which the solid is in equilibrium with its liquid‚ and this characteristic is very unique‚ so a
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propanol‚ ethylene glycol‚ diethylene glycol‚ and triethylene glycol‚ and the mean hemolysis times can be seen below in Figure 1. The mean hemolysis time for urea was 11.90 seconds (±2.65 sec‚ n = 11). Thiourea took an average of 92.72 seconds (±12.41 sec‚ n = 11) to hemolyze 75% of erythrocytes‚ while methanol took 9.19 seconds (± 1.66 sec‚ n = 11). The black line was seen through
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Paul R. Walsh Paul.R.Walsh@morganstanley.com +44 (0)20 7425 4182 Peter J. Mackey 3 Peter.Mackey@morganstanley.com +44 (0)20 7425 4657 3 Christian J. Stiefel REVISIT Petrochemicals Supercycle No Longer the Base Case Global ethylene utilization of 90% is no longer a high probability in 2014. Demand continues to lag historical trends‚ and we do not envision a positive inflection. After two weak years‚ Chinese data are improving against soft comps‚ while developed markets’
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▪ pentane [pic] ethylene + propane ▪ C5H12 (g) [pic] C2H4 (g) + C3H8 (g) – Hydration of ethylene (the reverse can also happen known as de-hydration‚ where concentrated acid is used): ▪ ethylene + water [pic] ethanol ▪ C2H4 (g) + H2O (l) [pic] C2H5OH (l) – Hydrogenation of ethylene: ▪ ethylene + hydrogen [pic] ethane ▪ C2H4 (g) + H2 (g) [pic]C2H6 (g) – Hydrohalogenation (more specifically‚ Hydrofluorination) of ethylene: ▪ ethylene + hydrogen fluoride
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Case 25-3 Formosa Plastics Group For many years‚ managers at Formosa Plastics Group (FPG) used a management control system with an element that was somewhat unique for a large corporation – all employees were evaluated subjectively. In making their judgments‚ evaluators looked at objective performance measures but subjectively made many adjustments for factors they deemed to be beyond the employee’s control. One effect of this system was that bottom-line profit was not even considered in the evaluations
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Solvents used were water‚ methanol‚ n-butanol‚ ethylene glycol‚ acetone‚ hexane‚ toluene‚ ethyl acetate‚ and dichloromethane. Then added to the vials was 0.5 mL of isooctane in each one. The vials were then swirled and observed to determine solubility. In part two of the experiment‚ 0.5 mL of concentrated
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