Grignard Synthesis of Triphenylmethanol Aim The aim of this experiment was to prepared Grignard reagent (phenylmagnesium bromide) from bromobenzene and magnesium‚ to use the reagent prepared to synthesise a tertiary alcohol (triphenylmethanol) by reacting reagent and ester (methyl benzoate)‚ and the product formed is analyse by infrared spectroscopy (IR)‚ melting point‚ thin layer chromatography (TLC)‚ gas chromatography mass spectrum (GCMS) and finally Nuclear Magnetic Resonance spectroscopy. Introduction
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ineffective. In order to help resolve the crisis‚ antibiotics were found through screenings of soil microorganisms. However‚ soil microorganism’s antibiotics were depleted by the 1960s and their antibiotic effects were unable to be replicated through synthesis. In this experiment‚ the researchers developed numerous methods to cultivate uncultured organisms in their environment. The goal of this experiment was to find antimicrobials in the uncultured soil. Through this successful experiment‚ the researchers
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In our ecocolumn many changes occurred over the several week course we were observing and collecting data on the three chambers. Aquatic and Decomposition quickly turned septic while terrestrial experienced plant growth. Overall the health of the ecosystem was very poor due to the severe changes in the aquatic chamber. Terrestrial In the Terrestrial camber of our ecocolumn‚ several changes happened over time. The clover seeds planted at the beginning had a rapid growth rate. At one point our chamber
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Abstract: The purpose of this lab is to synthesise acetylsalicylic acid (aspirin) by creating a reaction between acetic anhydride and salicylic acid. This was be accomplished through the use of recrystallization. Acetic anhydride and salicylic acid are mixed together‚ and then acidified by the addition of a few drops of concentrated sulfuric acid‚ which catalyzed the reaction. The percent yield is calculated to determine the effectiveness of the reaction in preparing the desired product (aspirin)
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following features: a. Corrects near-sightedness or far-sightedness‚ whichever may be the case‚ through varying curvatures of the lenses‚ for different grades b. May be rectangular or circular in overall shape c. Around 1.5 inches in length‚ 1 inch in width d. Clear and transparent‚ not dark Considering that the finished goods (lenses) are very much expensive in relation to the raw materials (marbles)‚ it would be safe to say that much value was added to the raw materials by the process
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Safety Precautions for Synthesis of Acetic Anhydride Acetic Anhydride Acetic anhydride is an irritant and also flammable‚ therefore gloves and goggles should be worn at all times during the experiment. It is reactive to water‚ so in the case of fire‚ alcohol foam or carbon dioxide is preferred to use as an extinguisher. This chemical has harmful fumes and use of a fume hood is strongly recommended. Sulphuric and Salicylic Acid These acids may irritate the skin in high concentrations. Take
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boiling. Keep watching during the reflux to be sure it is just boiling. Isolate the product: • Allow the reaction to cool; when it has reached room temperature‚ cool it briefly in an ice bath. • Remove the spin vane and rinse it into the vial with 1-2 ml of ether. Add a little distilled water
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undergoing differentiation to induce different cell types. HL-60 cells can undergo morphological changes‚ changes in gene expression‚ and changes in protein synthesis. In the past weeks‚ we were able to conclude that HL-60 cells treated with DMSO and HL-60 cells treated with PMA will differentiate into granulocytes and monocytes upon treatment (1). We were also able to observe that both types of treated cells will express the beta-actin gene because it is a housekeeping gene. However‚ only HL-60 cells
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Individuals control their lives through the rights and personal freedoms. The natural state of humanity promotes personal freedom and rights with the demand of peace. They are born inherently good and in a “state of perfect freedom.”1 The law of nature is the primitive law of life that creates personal rights. The law of nature protects people’s freedoms and keeps them under a code. While individuals are born inherently good‚ moderate greed is included in the law of nature as a way for “[man] to
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Analysis‚ Synthesis‚ and Argumentative Essays The three types of essays mentioned in “Five Steps to a Five: AP English Language” are analysis‚ argumentative‚ and synthesis. An analysis essay is complied of different parts‚ it explains how the many parts can come together to produce a complete result. To have an argumentative essay you must acknowledge what you are defending and have sufficient and accurate information to support your claim. A synthesis essay should contain the main points of compared
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