UNIVERSITY OF WATERLOO Department of Chemistry Synthesis of ACETAMINOPHEN Laboratory Report 1 CHEM 123L January 19‚ 2014 Prepared for: Dr. S. Stathopulos Department of Sciences‚ Chemistry Faculty University of Waterloo Teaching Assistant: Aaron Chan Prepared by: Section 001 Vithurjan Satkunarasan 20495383 Lab Partner: Ken Xu Introduction The synthesis of Acetaminophen is based on the amine group of p-aminophenol being acetylated by acetic anhydride to form an amide functional group
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The synthesized product‚ SnI4 was found to have a yield of 0.0227 g which corresponded to a 4.63 % yield. The synthesizing process of SnI4 showed distinctive changes. After the addition of dichloromethane the solution turned to a purple color‚ this then turned into a purple-burgundy colour after gravity filtration; the desired colour was observed only when vacuum filtration was applied. The purple solution turned into damp orange crystals and after thorough drying the crystals were a bright‚ dry
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(Robinson‚ 2011‚ p. 23). The origin of dreams encompasses three areas‚ the psychological‚ the scientific and the theoretical depending on to whom you talk. But for this paper‚ a review of Freud’s concepts of dreams‚ an analysis of the Activation Synthesis Theory of dreams‚ and an inquiry into the Activation-Information-Mode (AIM) Model of dreams will define dream theories. Dreaming is an important aspect of a person’s psychological well-being‚ and Sigmund Freud began the real inquiry into the process
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Experiment 5: Percent Water in a Hydrated Salt Chemistry 1300 Instructor: 2/8/12 Abstract: The purpose of this experiment was to determine the percent by mass in a hydrated salt‚ as well as to learn to handle laboratory apparatus without touching it. The hydrated salt‚ calcium carbonate‚ was heated with high temperature to release water molecules. Gravimetric analysis was used in this experiment to determine the percent by mass of water in a hydrated salt. The hypothesis of this experiment
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Protein Synthesis Notes If DNA’s shape is altered it can’t function properly. RNA is more flexible so changing the shape changes the function‚ which is wanted. Any shape of RNA can become another. Three shapes/functions of RNA: -mRNA: messenger (linear_____) -rRNA: ribosomal (large and like a globe) More stable than mRNA. -tRNA: transfer (shaped like t) If you flatten this it becomes mRNA. Hydrogen Bonds ………………………………. Protein Synthesis Overview- Two Processes: Transcription- synthesis of mRNA
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In the experiment‚ synthesis of copper compounds‚ the purpose was to recover the original amount of copper after series of chemical reactions. Then returning the copper back to its original form. The copper wire originally weighted 1.0099 g‚ but after the copper was transformed into Cu(OH)2 to CuO to CuSO4 and finally into Cu‚ the mass of the recovered copper was 1.1023g; the percent yield was 109%. Since the percent yield is more than 100%‚ an error must have occurred somewhere in the lab. A possible
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1. A student neglected to add sodium carbonate when extracting the tea leaves with hot water. Yet a very high yield of caffeine was obtained. The crystals melted at 202-214°C. Explain. • The sodium carbonate is supposed to be added when extracting the tea leaves with hot water in order to help purify the caffeine. So since the student neglected to add sodium carbonate the caffeine won’t be pure but the student would still be able to recover a large amount of caffeine. The literature melting point
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9/13/12 Mrs. Braha Period 1 Personal Essay Pushing yourself and always striving for achievement is not an easy thing to accomplish. Never taking the simple route in life and always working hard to become the strongest person possible takes a lot of hard work and devotion. In my life‚ hard work and perseverance have been the only paths to success. This is why people that know me well would describe me as a dedicated human being. I work diligently in school to maintain high
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Presidential elections have been going on in our county for hundreds of years. Most of them took place before television even existed. Television was invented witch color in the early 1960’s and that is when the first televised presidential debate took place (document D). Presidential debates‚ from the start have always been a pretty big hit on the television but ever since 1988‚ the debates ratings have been below 40. I think that this is because more interesting television programs have come
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enetics is the study of heritable changes in gene function that do not involve changes in the DNA sequence. Involves a methylation composition that affects the communication and response between cells and DNA. We all know DNA is your genetic makeup passed down from generation to generation. However‚ our DNA is intertwined with a protein known as histone. The bond between histones and DNA can vary along the DNA strand. This is caused by mythol group composition that cause the histones and DNA to coil
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