PERFLUORINATED COMPOUNDS: PERSISTENT‚ PESKY POLLUTANTS PRESENCE IN ARCTIC ENVIRONMENT AND WILDLIFE‚ LEADING TO PRESENCE IN HUMAN BLOOD SERUM J. Horton CHEM 422- Environmental Chemistry 4th of May‚ 2012 1 I N TR O D U CTI O N Perflurorinated compounds (PFCs) are heterogeneous organic compounds that have a partially or fully fluorinated alkyl chain‚ which can range from four to fourteen carbons and can have other functional organic groups attached. PFCs are mostly the products of industrial
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of two 5-membered rings situated directly above and below the metal center. It looks like an iron sandwich. The reaction of molybdenum hexacarbonyl and mesitylene is unstable with respect to air. Because inorganic chemists desire to work with compound that have some component that is air sensitive‚ they have devised a couple of ways to manipulate air-sensitive materials. We will focus our efforts on the use of a Schlenk line in this laboratory. A Schlenk line is a piece of equipment that is designed
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supply and transport of oxygen to the cells and removal of carbon dioxide from the blood. (10 Marks) Paragraph 1: What happens in the respiratory system? Respiratory System: Coordinating the Supply and transport of Oxygen * Oxygen is inhaled through the nose or mouth * Travels down through the Pharynx * Travels down the Larynx * Reaches the lungs and goes through the Bronchi * Through the Bronchioles * Then reach’s the Alveoli * The Oxygen then leaves the lungs and
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Abstract An experiment was conducted to determine the effect of the allelopathic compounds of Encelia Farinosa (brittle bush) on desert native annuals and non-native seed germination. The experiment was set up by putting native wild flower seeds in six Petri dishes and lettuce seeds in six different dishes. To three of each dish containing the different seeds‚ water was added as a control. To the three other dishes‚ a prepared brittle bush tea (filtered ground brittle bush leaves and water) was
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Regarding the TPR results: ZnFe2O4 did not show any sign of α-oxygen related to surface‚ which is looser than β or γ-oxygen related to the deeper oxygen of crystal structure. However‚ reducibility of lattice oxygen depends on the crystal size of the metal oxides; the smaller particles results shortening the distance for oxygen migration from the bulk to the surface. In summary‚ the characterizations of ZnFe2O4 reveal that the preparation protocol allowed ZnFe2O4 to have a smaller particle size and
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CARBOHYDRATE ANALYSIS INTRODUCTION: * Organic compounds are the major components of cells and tissues. They provide energy for life processes‚ participate in and regulate metabolic reactions‚ and transmit information. * Organic macromolecules in living organisms can be classified as carbohydrates‚ proteins‚ lipids‚ or nucleic acids etc. CARBOHYDRATE CHEMISTRY: * A Carbohydrate is an organic compound with the general formula Cn (H2O) n that consists of only carbon‚ hydrogen and oxygen(CHO)
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Analysis of Hydrocarbons Jessa Grace B. Castillo* and Stephanie Chua Department of Chemistry‚ University of Santo Tomas‚ Manila‚ Philippines ______________________________________________ Hydrocarbons are organic compounds containing only hydrogen and carbons and further divided in major types. Hydrocarbons react differently in reagents. The basis of determining an unknown hydrocarbon is due to the differences in reactions of hydrocarbons. An unknown compound is determined using tests.
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The Headmaster and his Assistants‚ Members of Stuff‚ Outgoing Prefects‚ Seniors‚ Fellow Student. I deem it very distinguished to stand before you at this instant to present my manifesto as an incoming school prefect for this grand institution of the Tescans. "Prefects are birds of passage" Seniors‚ kindly permit me to go on a memory lane. Last year in an occasion like this our outgoing prefects stood before us to read their manifestoes as the term of office was due to be handed over to them. As
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References: 1. Nielsen‚ S. Suzanne. Food Analysis. Third ed. New York:Kluwer Academic/ Plenum Publisher‚ 105-110 (2003). 2. Pomeranz Y.‚and Meloan Cliffton E. Food Analysis: Theory and Practice. Third ed. New York: Chapman & Hall‚ 602-624 (2000). 3. Tee E Siong‚ Mohd Ismail Noor‚ Mohd Nasir Azudin‚ Khatijah Idris. (1997). Nutrient Composition of Malaysian
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Washington on 01 February 2011 Published on 01 January 1959 on http://pubs.rsc.org | doi:10.1039/JR9590000551 113. The Organic Chemistry of the Transition Elements. Part I. Tricarbonylchromium Derivatives of Aromatic Compounds. By B. NICHOLLS M. C. WHITING. and Many aromatic compounds‚ ArH‚ displace carbon monoxide from chromium hexacarbonyl with the formation of complexes Cr(CO)‚(ArH) (I). These are stable and may carry any of several functional groups. The effects of the metallic residue upon typical
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