salicylic acid obtained: 0.250 g 5. Volume of water used as recrystallizing solvent: 2 mL 6. Mass of purified salicylic acid: 0.134 g 7. Percent yield of purified salicylic acid from reaction: 63.5% 8. Melting point of purified product: 158-160 oC 9. Name of NMR solvent used and its chemical shifts: Acetone-d6‚ the chemical shifts are 29.9 and 206.7 for 13C Questions: 1. 2. The phenol group of methyl salicylate is a weak acid‚ therefore it reacts very
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28‚ 2013 Date Submitted: March 14‚ 2013 Abstract: The product ratio of N-ethylsaccharin to O-ethylsaccharin that occurred due to alkylation with iodoethane at 80 oC was determined to be 81.5% to 18.5%‚ respectively‚ based on an analysis of the 1H NMR spectrum that was collected. The melting point range of 87.8-94.7 oC also indicated that the mixture was largely composed of N-ethylsaccharin. The more prevalent product structure is: C2H5I C2H5I And/Or And/Or
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Criminal Law and Criminal Procedure Course Assignment 23 November 2012 Guidance Note Q.1. Chan Faat has an argument with his father during dinner. They are both drinking beer. Chan Faat drinks about six bottles of beer during dinner. They start arguing about a recent football match which they had been watching. Chan Faat becomes very angry and hits his father on the head with his beer glass. The glass breaks and cuts the father above the left eye causing slight bleeding. Chan’s father goes
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ECON1001: Introduction to Economics I Problem Set I 1. You have planned to spend 9 days in Vienna during this Christmas and New Year season. You have reserved a round-trip ticket to Vienna‚ which would cost you $8000. You have also bought the ticket to Vienna Philharmonic’s New Year Concert‚ which cost you $200. You have wanted to attend the New Year concert for a long time and you are willing to pay $1000 to see it. Tickets to the concerts are nonrefundable and you cannot resell
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Mandatory Experiment 6.2 Studying the effects on reaction rate of (i) concentration and (ii) temperature Theory The reaction used is that between a sodium thiosulfate solution and hydrochloric acid: 2HCl(aq) + Na2S2O3(aq) → 2NaCl(aq) + SO2(aq) + S(s)↓ + H2O(l) The precipitate of sulfur formed gradually obscures a cross marked on paper and placed beneath the reaction flask. The rate of reaction‚ and consequently the time taken to obscure the cross‚ depends on a number of variables such
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Conditions One of the main effects of the industrial revolution is working conditions. There were no laws back then regulated what factories could do with their biohazard waste(BCP). Many factories work hours were long almost up to12 to 15 hours a day (OCS). Many those machines they work on were dangerous. Many people lives the factories they worked at and at times they would get horribly beaten like they were kids they were often slaved away. The working conditions were so bad that they had 20 years
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Chemistry 105 A Final Exam 06/24/10 First Letter of last Name Dr. Jessica Parr Question 1 2 3 4 5 6 7 8 9 10 Maximum points 18 8 12 12 8 10 12 10 6 6 (Sub-T) PLEASE PRINT YOUR NAME IN BLOCK LETTERS Name: __________________________________________ Last 4 Digits of USC ID:_____ _____ _____ _____ Lab TA’s Name: _________________________________ Score (102) Grader Question 11 12 13 14 15 16 17 18 19 20 (Sub-T) TOTAL
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Research Citric acid: Citric acid is a weak organic acid with the formula C6H8O7. Citric acid is a natural preservative/conservative and is also used to add an acidic or sour taste to foods and soft drinks. In biochemistry‚ the conjugate base of citric acid‚ citrate‚ is important as an intermediate in the citric acid cycle‚ which occurs in the metabolism of all aerobic organisms. Citric acid is a commodity chemical‚ and more than a million tonnes are produced every year by fermentation. It is
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of a Manager as a Coach and Mentor. (5014 3.1) Manager - Somebody who is responsible for directing and controlling the work and staff of a business‚ or of a department within it. Encarta Dictionary English Version. As the Officer Commanding (OC) the Mountain Leader and Intelligence‚ Surveillance‚ Target Acquisition and Reconnaissance (MLISTAR) Company I am responsible for managing the implementation of new ideas‚ training design and continuous improvement throughout the company. I manage
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Freezing Point of Naphthalene I. Purpose To determine the freezing point of a known substance‚ naphthalene II. Materials ringstand gas source test tube test tube clamps thermometer naphthalene Bunsen burner goggles hose stopwatch III. Procedure 1. Assemble the Bunsen burner‚ attaching one end of the hose to the burner and the other to a gas source. 2. Assemble the ring stand so that a ring clamp is attached to the stand holding the test
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