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 Formation
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Ester Education Quarterly‚ A. Harper TeacherJ. de Jong & Candace Spring 2005 Preparing Mainstream Teachers for English-Language Learners: Is Being a Good Teacher Good Enough? By Ester J. de Jong & Candace A. Harper Introduction More and more teachers find themselves teaching students from increasingly diverse linguistic and cultural backgrounds. In a recent report (National Center for Education Statistics‚ 2002)‚ 42% of the teachers surveyed indicated that they had English Language Learners
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Special Report Plastic Additive: A Techno-Commercial Profile B.G. SAMPAT E-mail: bgsampat@bom3.vsnl.net.in INTRODUCTION Every activity in modern life is influenced by plastics and many depend entirely on plastic products. All these plastic products are made from the essential polymer mixed with a complex blend of materials known collectively as additives. Without additives‚ plastics would not work‚ but with them they can be made safer‚ cleaner‚ tougher and more colourful. Additives cost money
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The Aroma of Christmas Trees One familiar smell around Christmas is that of the pine tree. The smell comes from the chemical pinene. There are two compounds in a pine tree‚ Alpha-pinene and beta-pinene. The chemical compounds The pinene is part of the terpenes family‚ which are produced by plants. Terpenes can form aerosols with other chemicals that go into the clouds and cool the air‚ as well as make the skyline above mountains blue. The terpene pinene is also a reason that pine trees are so flammable
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What is a Stereotype? It is a widely held but fixed and oversimplified image or idea of a particular type of person or thing. A stereotype is a judgment made towards a person or group‚ it is also a particular image giving to a person. A thought that may be adopted about specific types of individuals or certain ways of doing things. These thoughts may and may not accurately reflect in reality. Self-categorization‚ people change their stereotypes of their in groups and out-groups to suit the context
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“to store”. A lager is a type of beer that is brewed using bottom-fermenting yeast at lower temperatures and is aged for a much longer time than ales creating a cleaner‚ clearer beer. The yeast used in lagers‚ Saccharomyces Uvarum‚ produces fewer ester by-products than seen in ales‚ allowing other flavors‚ such as hops‚ to become more noticeable. The range of flavors noticeable in lagers is more limited than ales. They are always
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Pitch Perfect is a 2012 American musical comedy film directed by Jason Moore. The screenplay was written by Kay Cannon. The musical comedy features an ensemble cast consisting of Anna Kendrick‚ Skylar Astin‚ Rebel Wilson‚ Anna Camp‚ Brittany Snow‚ Ester Dean‚ Alexis Knapp‚ Hana Mae Lee‚ Ben Platt‚ Adam DeVine‚ with John Michael Higgins‚ and Elizabeth Banks. The plot follows an all-girl college a cappella group‚ The Barden Bellas‚ as they compete against another a cappella group from their college
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BACHELOR OF SCIENCE (HONS) BIOTECHNOLOGY YEAR 1 SEMESTER 1‚ 2 & 3 UDBB 1164 FUNDAMENTAL ORGANIC CHEMISTRY 0 EXPERIMENT 1 PROPERTIES OF HYDROCARBONS Introduction Hydrocarbons are compounds which contain only carbon and hydrogen‚ can be classified into several types‚ depending on their structure. Aliphatic hydrocarbons are divided into three classes: alkanes (e.g. methane‚ ethane and propane) have only single bonds‚ and are said to be saturated; alkenes (e.g. ethene and propene)
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* Monounsaturated fat is a fatty acid that has one double bond in the fatty acid chain and all of the remainder of the carbon atoms in the chain are single-bonded. * Polyunsaturated fat is a fatty acid in which the fatty acid part of the ester is polyunsaturated. Trans fat is the common name for unsaturated fat with trans-isomer fatty acid. Because the term refers to the configuration of a double carbon-carbon bond‚ trans fats are sometimes monounsaturated or polyunsaturated but never
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Allelopathic activity of the aqueous methanol extracts of Mangifera indica L. leaves The aqueous methanol extracts obtained from mango leaves inhibited seed germination of radish and sand fescue‚ and inhibited seedling growth of root and shoot growth of radish‚ rapeseed‚ sand fescue and crabgrass (Figure 1 and 2). The extract obtained from 0.03 g dry weight of mango leaves inhibited 20 and 50 % germination of radish and sand fescue respectively‚ on day 4 (Figure 2). The extract obtained from 0.03
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