"Polycyclic aromatic hydrocarbon" Essays and Research Papers

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    Breadtalk and Live Style

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    BreadTalk – Boutique Bakery A Contemporary Lifestyle Concept BreadTalk opened in Singapore in July 2000 with a revolutionary take on the bread industry. Entering the market with its new concept of a boutique bakery‚ it shook up the bakery industry with its innovative and creative products. Currently the market leader in the new concept bakery‚ BreadTalk was listed in June 2003 on the Singapore Exchange‚ giving customers a stake in the popular bakery. BreadTalk has close to 200 varieties of

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    Organic Chem Study Guide

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    BACKROUND INFORMATION Organic chemistry is the study of hydrocarbons and their various deviations. (Ex. natural gas‚ paper‚ proteins‚ carbohydrates) Saturated hydrocarbons are hydrocarbons with carbon-carbon single bonds. (Ex. C-C) Unsaturated hydrocarbons are hydrocarbons with one of more multiple carbon-carbon bonds. (Ex. C=C double bond‚ triple bond‚ or both) Stereoisomers have the same molecular and structural formulas but different orientations of atoms in space. Constitutional isomers

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    Use of Personal Protective Equipment 1. Purpose It is a requirement of the School of Chemistry and the University that appropriate personal protective equipment (PPE) be employed to minimise risks which may be present within a laboratory or workplace. This guideline discusses the various basic types of which are available to laboratory workers‚ briefly outlining their use‚ application and maintenance. 2. Scope This procedure applies to all personnel working in the School of Chemistry laboratories

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    Multistep Synthesis of Tetraphenylcyclopentadienone In this laboratory experiment a synthesis was performed through several separate steps. The purpose of the experiment was to synthesize tetraphenylcyclopentadienone from benzaldehyde and to run reactions on carbonyl containing compounds. There was a total of three steps that led up to the synthesis of the final product‚ tetraphenylcyclopentadienone. The first step of the experiment was the condensation of benzaldehyde to yield

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    Kerogen And Coal

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    volume of voids that are filled by fluids‚ and the temperature will increase. Such factors are enough for the sediments to alter or change physically and chemically. Kerogen is a highly complex waxy mixture of hydrocarbon compounds (primary organic component of oil shale) where hydrocarbons

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    Multistep Synthesis

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    Benzil | 82.5 – 85.6 | Final Benzil | 94.2 | Final Benzilic Acid | 148.3 | Table 3: Melting Points Wavenumbers (cm-1) | Functional groups | 1593 | Aromatic | 3065 | Sp2 C-H bond | 1659 | C=O bond/carbonyl group | Table 4: IR wavenumbers and functional groups of Benzil Wavenumbers (cm-1) | Functional groups | 1600 | Aromatic | 3100-3000 | Sp2 C-H bond | 3100-2900 | Carboxylic Acid | 3300 | O-H alcohol | 1650 | C=O bond/carbonyl group | Table 5: IR wavenumbers and functional

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    Exploring Boiling Points Introduction: Every substance has a unique set of properties that allow us to differentiate between them. These properties are classified as physical properties and chemical properties. Physical properties are those that can be determined or measured without changing the composition or identity of the substance. These properties include color‚ odor‚ taste‚ density‚ melting point‚ boiling point‚ conductivity‚ and hardness. Chemical properties tell us how the substance

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    c1 revision

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    will run out if we continue using them Crude oil This fossil fuel is made up of a mixture of hydrocarbons. Hydrocarbons are compounds that contain hydrogen and oxygen atoms only a) b) In the exam you may be asked to identify hydrocarbons from their structure. You can see that a) is not a hydrocarbon as it contains oxygen as well Crude oil on its own is not useful but the hydrocarbons it contains on their own are useful and so they need to be separated. They are separated by a

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    Porphyrin Synthesis

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    An examination of the porphyrin structure reveals that individual pyrrole units comprise the overall structure. As an aromatic compound‚ pyrrole can participate in electrophilic aromatic substitution reactions to form the porphyrin (your report should discuss the mechanism in great detail‚ including the regiochemistry). The initial porphyrinogen product is not fully aromatic‚ but oxidation from atmospheric oxygen in the presence of the Lewis acid silica gel allows formation of the fully conjugated

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    it’s a gift for a family member or just a decoration around your house‚ Christmas crafts bring delight for everyone involved. One simple and very popular craft is candle making. Here are a few steps that will show you how to make a wonderful and aromatic pinecone candle: In order to complete this craft‚ you will need the following materials: paraffin wax candlewick handful of small pinecones cinnamon/nutmeg cylindrical candle mold cooking pot candle dye (optional) Once you have assembled your materials

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