and cyclohexene by the principle of stem distillation. A chaser solvent is added to recover of the reaction product that may get lost in the fractionating column. Cyclohexene itself is used in manufacturing of adipic acid‚ hexahydrobenzoic acid‚ maleic acid‚ cyclohexanol and cyclohexeneoxide. Further‚ it is used as a solvent. III. Equations H3PO4 + H2O IV. Mechanisms Step 1: Protonation of the hydroxyl group (fast equilibrium) Step 2: Ionization to a carbocation (slow‚ rate-limiting)
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Aspirin acts as an acetylating agent where an acetyl group is covalently attached to a serine residue in the active site of the COX enzyme. The synthesis of aspirin is classified as an esterification reaction. Salicylic acid is treated with acetic anhydride‚ an acid derivative‚ causing a chemical reaction that turns salicylic acid’s hydroxyl group into an ester group (R-OH → R-OCOCH3). This process yields aspirin and acetic acid‚ which is considered a byproduct of this reaction. Small amounts of sulfuric
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Shannon L. Alder wisely declared that “One of the greatest regrets in life is being what others would want you to be‚ rather than being yourself.” This implies that every single person is talented in various ways own way. Do not conform to the standards of other people‚ because you are not them. This will force you to act a certain way‚ dress a certain way‚ think a certain way. Now‚ wouldn’t it be easier to just be yourself. If you in fact do fit the standards of other people while you act they way
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ChE 101 Lab Exercise 4 05 December 2012 Materials Balance (Non-reacting Systems) THR/WRU 1. A 40-mol-% aqueous ethanol solution is to be distilled into two streams: a distillate with 98% ethanol and a side stream with 60%. 98% of the alcohol in the feed is to be recovered in these two products; only 2% goes into the bottoms. If the bottoms product contains 2% ethanol‚ calculate the amount of the different streams per 1000 kmol of feed stream. Given: Recovery = 98% of ethanol in
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Case Study: Smoothie King Summary Smoothie King is the original nutritional smoothie bar and health marketplace since 1987 and within one year realized the key to their success and growth would be to develop a franchise system. The Smoothie King brand has been recognized by Entrepreneur Magazine as being # 1 in the juice bar category for 15 consecutive years and has seen steady growth with approximately 610 franchised units in over 35 US states (www.worldfranchising.com). As with every franchise
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solid to liquid extraction and liquid to liquid extraction; the purification by sublimation and melting point determination. Three teabags with weight 6.2674g were boiled with water and then extracted with 60 mL DCM; extract was dehydrated with anhydride Na2SO4 then was collected by decanting to an evaporating dish where it was evaporated to dryness. Crude caffeine with a weight of 0.0446g gave out a 0.7116% yield; after sublimation‚ the sublimate weigh 0 .0009g with a percentage yield of 0.0144%
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Assessment Feedback Sheet (This sheet must be completed for each assignment submitted) Learner name: Nasrin Begum Assessor name: Shwe yu moon Course title: Level 1 Diploma in Skills for Health and Social Care (Adults and Children) Course code: Group 4 Module: OCN UNIT (4 credits) Submission Date: 01/12/2014 Assignment title: Introductory awareness of health and safety in health‚ social care and children’s and young people’s settings Comments on content (based on the assessment criteria):
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consider that sugar has an impact in regard to obesity. Many people believe fat is the only factor to contribute to weight gain. “The obesity epidemic is largely the result of changes in a diet that has increasingly included sugary and fatty foods” (Alder 1). Hence‚ sugar is one of many reasons obesity has become an epidemic. It is difficult to avoid these problems because most foods today contain a surplus of sugar. Along with this‚ we mainly consume sugary foods because of
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SUMMARY OF ORGANIC REACTIONS SECTION 1 - ALIPHATIC Aldehydes and ketones |Type of reaction |Mechanism | |1. oxidation (aldehydes only): aldehyde ( carboxylic acid |n/a | | | | |reagents: potassium
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Reagent/Product Structure Hazards First Aid acetone Causes skin and eye irritations‚ hazardous when ingested or inhaled. The substance is toxic to central nervous system (CNS). The substance may be toxic to kidneys‚ the reproductive system‚ liver‚ skin. Repeated or prolonged exposure to the substance can produce target organs damage. . aniline Hazardous in case of skin contact (irritant‚ permeator)‚ of eye contact (irritant)‚ of ingestion‚ of inhalation. Severe overexposure can result
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