Experiment 4 Synthesis of Salicylic Acid Introduction Throughout history‚ botanical extracts have been used as medicines. Approximately 30% of all medicines have a plant origin. This number increases to 60% if you consider medicines that at one time were derived from plants‚ but have been synthesized in the laboratory. Salicylic acid is a white crystalline compound that can be isolated from the bark of birch trees. Since it is a valuable substance that can be isolated from nature‚ it is called
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base single stranded pairing Helix Yes No Similarities: Nucleotides are basic structural unit Complementary base pairing by hydrogen bonds Both have a pentose sugar and phosphoric acid E. Protein Synthesis Demonstrate a knowledge of the basic steps of protein synthesis‚ identifying the roles of DNA‚ mRNA‚ and ribosomes in the process of transcription and translation Transcription RNA molecule makes complementary copy of DNA RNA goes into cytoplasm Translation Initiation: mRNA
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pace and informality in the English language is on the rise. In places where formal language was once a must‚ informality has taken over‚ and questions are raised over whether formal language still has a place in modern English. However‚ despite changes‚ formal language is still in use and is still expected and considered the most appropriate method of address in many situations. In written and spoken communication‚ formal language has the ability to convey knowledge and provide a sense of occasion
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Procedure The procedure stated in Chem 2120 experiment 6 Williamson Ether Synthesis of Phenacetin laboratory manual was followed without any major changes. Data and results Compound Amount used MW (g/mol) Moles Stoichiometry/Comments acetaminophen 0.354 g 151.16 2.34 x 10-3 limiting reagent ethyl iodide 0.3mL 155.97 3.75 x 10-3 1.6 equiv ’s sodium ethoxide 2.6mL 68.05 3.3 x 10-2 catalyst‚ reaction solvent crude product obtained: phenacetin 0.32g
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2. Experimental 2.1. Experimental procedure for the synthesis of bone-like CS-PEG-HA-ZrO2 nanocomposites (BNC I-III). At first‚ ZrO2 nanoparticles (NPs) were synthesized by using the previously reported method [16]. Briefly‚ aqueous solution of sodium hydroxide (purchased from HiMedia Private Ltd.) (40 ml 0.05M) was slowly added in zirconium oxychloride octahydrate (purchased from Merck India Ltd.) solution (100 ml 0.01M) prepared in methanol-water (1:1) at 5 oC temperature. The mixture was stirred
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The syntheses of 8-(4-(decyloxy) phenyl)-1‚ 3‚ 5‚ 7-tetramethyl-2‚ 6 dibromo-4-bora‚ 3a‚ 4a-diaza-s-indacene and 8-(4-(decyloxy) phenyl)-1‚ 3‚ 5‚ 7-tetramethyl-2‚ 6 diiodo-4-bora‚ 3a‚ 4a-diaza-s-indacene both commence with the synthesis of 4-(decyloxy) benzaldehyde. Following standard procedures and using the resulting aldehyde‚ along with 2‚4-dimethylpyrole‚ a BODIPY dye was obtained [36]. To facilitate intersystem crossing‚ the 2- and 6- positions of the boradiazaindacene ring system were iodinated
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Multistep Synthesis of Tetraphenylcyclopentadienone Author: Instructor: Date work performed: 10.18.2012--10.25.2012 Date work submitted: 11.01.2012 Abstract: The aim of this experiment was to perform a multistep synthesis to form tetraphenylcyclopentadienone. The first step of the reactions was to synthesize benzoin from the condensation of benzaldehyde. A yield of 28.91% benzoin was obtained. The MP of benzoin was 127O-130O C and the IR spectra displayed a carbonyl peak at 3415 cm-1
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Have you ever used an object so much it has been considered a drug based on your usage of it? Well‚ for about half of my life‚ technology has been considered a drug that I am very much addicted to. When you were younger‚ instead of playing with your toys and friends what else could you possibly do for fun? Throughout my life‚ I have been misused the privilege to having technology. In the informative short essay‚ “Television: The Plug-In Drug” by Marie Winn‚ the author explained about how experts
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State Curriculum Assessment Curriculum Defined Every year as new students enter school they wonder what they will learn. As the student enters the room on the first day of school the teacher has her room precisely decorated and has all of her lesson plans clearly defined. Although the student has no idea‚ these lesson plans where designed specifically for his/her every need before he even stepped into that classroom. Every year the curriculum for Louisiana schools is determined long before
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(Student’s Name) (Student’s Address Here) October 9‚ 2013 Mayor Linda A. DuBois Pittsgrove Township Committee 989 Centerton Road Pittsgrove‚ New Jersey 08318 Dear Mayor Linda A. DuBois‚ I am pleased to learn of the Committee’s steps towards beginning a neighborhood watch program in Pittsgrove. Our community will benefit greatly from this system. However‚ many of the residents are still unaware of this organization’s existence. Properly advertising the neighborhood watch program will
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