de-colorization. The organic layer was washed with sodium chloride (5 ml) and transferred to a flask where sodium sulfate was added for evaporation. The remaining product was roto-vapped to produce crystals. The remaining product was then recrystallized in hot ethanol (12 ml) and cooled to room temperature. E-Stilbene: NMR: 6.1 ppm (0.89‚ 7.1 ppm
Premium Chemistry Ethanol Chemical reaction
• Types of mixtures: uniform and non-uniform mixtures. • Provide definitions for the following terms: i. Solutions i.e. alloys as solid solutions and air as gaseous solution. ii. Solvent i.e. water as a universal solvent‚ ethanol‚ etc. iii. Solute. iv. Filtrate. v. Residue. vi. Immiscible and miscible liquids. vii. Distillate. viii. Sublimation i.e. examples of substances that sublime – iodine‚ ammonium salts‚ iron (III) chloride
Premium Distillation Separation process Evaporation
EXPERIMENT 5 SEPARATION OF A MIXTURE INTO ITS COMPONENTS BY FRACTIONAL CRYSTALLIZATION Introduction: Fractional crystallization is one of the experimental techniques used to separate or purify mixture. Fractional crystallization makes use of the differences of solubility to separate the components of a mixture. Goals: Applying fractional crystallization to separate a mixture of salicylic acid and copper sulfate pentahydrate into its components. Calculate the percent of salicylic
Premium Solubility Solvent Ethanol
Assigment 1: Foundations: Atoms‚ Molecules‚ and Ions 1.1 A 47.3-mL sample of ethyl alcohol (ethanol) has a mass of 37.32 g. What is its density? 1.2 If 116 g of ethanol is needed for a chemical reaction‚ what volume of liquid would you use? The density of ethanol is 0.789 g/mL 1.3 Battery acid is 40.0% sulfuric acid‚ H2SO4‚ and 60.0% water by mass. Its density is 1.31. Calculate the mass of pure H2SO4 in 100.0 mL of battery acid. 1.4 How many moles of atoms does 136.9 g of iron metal contain
Premium Ethanol Oxygen Chemistry
Organic Chemistry II Laboratory (ABCT357/ABCT3757) Lab Manual 2014-2015 Lee Hang Wai‚ Alston (alston.lee@polyu.edu.hk) Dr. Lee Cheng Hao‚ Samuel (chenghao.lee@polyu.edu.hk) Organic Chemistry II Laboratory (ABCT357‚ ABCT3757) (Group one) Contact: Alston Lee (alston.lee@polyu.edu.hk) Tuesday 8:30-11:30 ‚ Laboratory: Y1315 Lab supporting staffs: YK Au / Kan Chan/Arnold Demonstrators: Dr. Samuel Lee‚ Alston Lee‚ Fu Wai Chung‚ Guo Shuai‚ Yuen On Ying‚ Sep 16 Tue Acetylation of α-D-glucopyranose (Expt
Premium Acetic acid Acetic anhydride Carboxylic acid
Bioethanol Fuel 1 The Efficacy of Bioethanol Fuel Elizabeth Wainright Little Rock Central High School 10th Grade Thompson Bioethanol Fuel 2 Bioethanol fuel is (Bioethanol Fuel. Com) “mainly produced by the sugar fermentation process‚ although it can be manufactured by the chemical process of reacting ethylene with steam” Bioethanol comes from an renewable resource that mainly grows in the United Kingdom. Kerosene is (A Comparisons of Three Kerosene Fuel Surrogates
Premium Petroleum Biofuel Poaceae
Results of primary use for gasoline‚ gasoline prices rising to all-time highs and environmental programs are the reason why consumers are complaining about driving their automobiles today. The primary use for gasoline is in automobiles and light trucks. Fuel produced all year round‚ and is delivered from oil refineries through pipelines to a massive distribution chain serving 167‚000 retail stations throughout the United States ("EIA Brochures"‚ 2004). Refineries produce millions of barrels of gas a day;
Premium Petroleum
species Melipona quadrifasciata was obtained in May‚ 2013 in the city of Blumenau‚ SC‚ Brazil (26 ° 54’21.3 "S 49 ° 04’49.1 "W). In order to obtain a hydroalcoholic crude extract (HCE)‚ 284.3 grams of propolis were pulverized and macerated in 70% ethanol (m m-1)‚ left in a dark chamber for 7 days at room temperature‚ filtered in vacuum and taken to complete drying in a rotary evaporator with reduced pressure. In order to increase the yield of the extract‚ this extraction procedure was repeated 3 times
Premium Bacteria Ethanol Oxygen
SIMILARITIES DIFFERENCES Both reports are related to the efficiency of fuel. My report had a less detailed conclusion than the other report did. Both use calculations in order to work out the efficiency of the fuels. My report only included information about two types of fuel‚ however the other report compared many. Both reports include a diagram of the experiment. The other report uses different equipment in the experiment to calculate fuel efficiency. Both my own report and the example professional report
Premium Internal combustion engine Petroleum Carbon dioxide
maltose-binding-protein‚ amylose affinity chromatography was performed. The amylose resin present in 20% ethanol was first diluted by adding 10 mL of 20 mM TrisHCl‚ pH 7.4‚ 0.2 M NaCl‚ 1 mM EDTA and centrifuged at 700 rpm for 5 minutes. After decanting the buffer‚ another 10 mL of TrisHCl‚ pH 7.4‚ 0.2 M NaCl‚ 1 mM EDTA was added to this resin solution and centrifuged at 700 rpm for another 5 minutes to further dilute the ethanol concentration in the resin. After the buffer was decanted again‚ the column was packed
Premium Ethanol Enzyme Chromatography