Friedel-Crafts Alkylation mechanism. A small amount of 1‚4-dimethoxybenzene was dissolved in acetic acid and t-butyl alcohol‚ along with H2SO4. The reaction was then allowed to go to completion at room temperature‚ and the crystals were washed with water and methanol. The percent yield of the product was 57.48%. This was lower due to the fact that many of the crystals were stuck in the reaction tube and could not be removed for weighing. Also‚ when a Pasteur pipet was used to remove the solvent from the reaction
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[-q2)] /(Dr2) = negative‚ thus an attraction To compare solvents‚ put the values in the equation: In H2O: FH = (k[+q1] [-q2)] /(DH r2) In methanol: FM = (k[+q1] [-q2)] /(DM r2) Comparison: FM /FH = DH / DM = 78 / 32 ≈ 2.5 Note: Measuring is always a comparison... Conclusion: These ions attract each other 2.5 X better in methanol Thus they separate
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DAYSTAR UNIVERSITY PSYCHOLOGY (PSY 111T) GROUP PROJECT: CHANG’AA - THE DEADLY KILLER. PRESENTED BY: ANGELA OMONDI & KEVIN CHAVERA CHANG’AA: THE DEADLY KILLER. 1. Introduction Chang’aa is a popular alcoholic drink commonly found in Kenya and it was once illegal‚ but was recently legalized. According to online encyclopedia Wikipedia‚ the literal meaning of chang’aa is ‘kill me quick.’ It is a clear liquor which announces itself with a fierce burn and an after taste of soil when consumed.
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* Question 1 0 out of 1 points | | | Which bond or interaction would be difficult to disrupt when compounds are put into water?Answer | | | | | Selected Answer: | A. hydrogen bond | Correct Answer: | C. covalent bond | | | | | * Question 2 1 out of 1 points | | | What is the atomic number of the cation formed in the reaction illustrated above?Answer | | | | | Selected Answer: | D. 11 | Correct Answer: | D. 11 | | | | | * Question 3 1 out
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Materials and methods 1. Raw materials Full ripe cactus Opuntia dillenii fruits were harvested from the orchard of Faculty of Agriculture‚ Suez Canal University‚ Ismailia Governorate‚ Egypt during December 2014. Fruits were washed and glochides and the two distal parts (top and bottom parts) were removed. The fruits were mashed in a mixer by mixing for 15 s. After that‚ the seeds were separated‚ washed and dried by hot air in a convective dryer (WT-binder‚ Type F115‚ Germany) at 50 ºC‚ air velocity
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Other Important Topics in Column Design Outline Sub-Flowsheets Thermodynamic model (Fluid Package) selection Solver selection Sub-flowsheets HYSYS has a multi-flowsheet architecture. A big flowsheet can be split up into smaller sub-flowsheets. Each sub-flowsheet has its own streams‚ operations‚ PFD and an independent fluid package. The column in HYSYS is a sub-flowsheet where independent operations are possible H83 PS1/H84 CFL Templates A template
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Juanita Sarmiento Daphnia Ecotoxicology Lab Report Introduction Ecosystems have a way of maintaining themselves under ordinary conditions but when a new factor is added that will most likely threaten the environment action needs to be put forth. Our environment is affected by many pollutants on a daily bases forming a threat to natural stability. For example some of the most polluted parts of the environment are bodies of water like that explained in our lab. Once pollution occurs
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amygdalina have been reported establishing its antimicrobial activity (Ijeh and Ejike‚ 2011). Study by Kambizi and Afolayan (2001) showed that acetone and methanol extracts (root) of the plant possess antibacterial activity towards Bacillus cereus‚ B. pumilus‚ B. subtilis‚ Micrococcus kristinae‚ Staphylococcus aureus‚ Enterobacter cloacae and E. coli growth with MIC ranging from 0.5 – 5 (mg/ml) with the acetone
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CHM 256: BASIC ANALYTICAL CHEMISTRY TUTORIAL 1: INTRODUCTION: ANALYTICAL CHEMISTRY 1. What is chemical analysis? 2. Differentiate between qualitative and quantitative analysis (Oct 2008‚ 2009‚ Dec 2009‚ Apr 2010) 3. Give 7 steps in performing any chemical analysis (Apr 2010) 4. Briefly explain how to prepare the following solutions: a) 1.0 L 10.50 % (w/v) aqueous CH3CH2CH2OH (answer : 105 g) (Oct 2006‚ Oct 2007‚ Oct 2008) b) 500 mL 2.0 M H2SO4 from a commercial reagent‚ at 90% (w/w) purity
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Performance Liquid Chromatography has been used to evolve an analytical procedure for the evaluation of the content of paracetamol in the bulk‚ dosage forms and in urine‚ a body fluid. Separation and resolution have been achieved with a combination of methanol and 2.5% acetic acid (15:85) on a reversed-phase column at ambient temperature. Elution was isocratic with UV detection at 257nm. Internal standard calibration method was used for quantitation with caffeine as the internal standard. Mean retention
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