Lab #4 May 26‚ 2015 Diels Alder Reaction Introduction: Diels Alder Reaction is the reaction of a diene with a species capable of reacting with the diene‚ the dienophile. A diene is a hydrocarbon that contains two carbon double bonds‚ while a dienophile is an electron-deficient alkene. The Diels-Alder is also called a [4+2] cycloaddition because a ring is formed by the interaction of four pi electrons of the alkene with two pi electrons of the alkene or alkyne. The product of the Diels-Alder
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Essential oil and extracts showed promising results against B subtilis and E coli. Ethyl acetate and ethanol extracts showed prominent antibacterial activity against all tested strains. • Antibacterial / Leaf‚ Flower and Fruits: Study of extracts of leaf‚ flower and fruit of VN was done to evaluate in vitro antibacterial activity against phytopathogens Pseudomonas solanacearum and Xanthomonas axonopodis. The ethyl acetate extract showed significant inhibition. Phytochemical screening yielded alkaloids‚
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Group VI Group Members: Esguerra‚ Jezreel Legaspi‚ Divine Rose Gutierrez‚ Joandra Pintor‚ Karlo Date Submitted: March 13‚ 2014 Professor: Ms. Jenette Malaban Activity 6: Fecal Analysis for the Detection of Parasites I. Objectives: 1. T o perform the basic techniques in fecal and blood analyses. 2. To identify parasitic forms that are recognizable in the fecal samples and blood smears by microscopy. 3. To determine the advantages and limitations in each procedure. II. Methodology
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(°C) Final Temp. (°C) Endothermic/ Exothermic Sodium Hydroxide NaOH 16.5 19.8 Exothermic Ammonium Chloride NH4Cl 15.5 Endothermic Sodium Acetate NaCH3COO 16.2 Slightly endothermic Sodium Chloride NaCl 16.5 Neither Part B Ammonium Chloride and Barium Hydroxide Equipment and procedures (In book) Results (observations) A white solid forms in the bottom of the test tube after vigorous shaking;
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This article was downloaded by: [CIMAP Central Institute of Medicinal & Aromatic Plants] On: 07 March 2013‚ At: 21:43 Publisher: Taylor & Francis Informa Ltd Registered in England and Wales Registered Number: 1072954 Registered office: Mortimer House‚ 37-41 Mortimer Street‚ London W1T 3JH‚ UK Natural Product Research: Formerly Natural Product Letters Publication details‚ including instructions for authors and subscription information: http://www.tandfonline.com/loi/gnpl20 Investigation on
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Synthesis and Analysis of the Coordination Compound Pentaaminechlorideocobalt (III) Chloride Heaven Lin and Forest Lin W.M. Keck Science Department‚ Claremont McKenna‚ Pitzer‚ and Scripps Colleges 925 N. Mills Avenue‚ Claremont‚ California 91711 Abstract Through using the spectrometer and titrations‚ the amount of the coordination compound‚ pentaaminechloridocobalt (III) chloride‚ was determined through a synthesis through an oxidation reduction of cobalt (II) chloride hexahydrate (CoCl2·6H2O)
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Chapter I THE PROBLEM This chapter contains subtopics that talks about the problem in this research such as background of the study‚ conceptual framework‚ statement of the problem‚ null hypothesis‚ significance of the study‚ scope and delimitations of the study and definition of terms. Background of the Study Nowadays‚ the demands for every man’s needs are drastically increasing. Consumption of our basic needs is at its peak because of our increasing population. There are many industries now
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HOMEMADE BOUNCY POLYMER An Entry for the 2009 DIVISION SCIENCE FAIR TEAM CATEGORY CHINKEE MAE M. ALANZALON Grade VI – Jose Rizal DAN ALFONSO VALENTIN V. SORIA TRISHA KATE E. GENERAL Grade V – E. Aguinaldo Researchers Mr. MARK ANTHONY R. CUA Research Adviser Marcela Marcelo Elementary School Pasay City October 2009 CHAPTER 1 INTRODUCTION One might think that chemists are a bunch of boring scientists who wear lab coats and look at beakers all day‚ but did you know that many toys you play with
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the solution was allowed cooled for 2-3 minutes. The dark black solution was filtered through a gravity filtration system‚ leaving dark residue behind on the filter paper‚ and colorless to slightly pink liquid in the beaker. Then‚ 9 mL of sodium acetate buffer‚ to maintain a relatively constant pH and 1.8 mL of acetic anhydride were added to the solution‚ and then it was mixed and heated for about 5 minutes. Then‚ to induce crystallization‚ the beaker was placed in an ice bath. The slightly white
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chemicals. The modern day chewing gums are made of four major ingredients including synthetic rubber‚ plastic‚ sugar‚ and coloring (dye). Modern day gums are produced from synthetic polymers such as styrene- butadiene rubbers and polyvinyl acetate. The final product is composed of 60% sugar‚ 20% corn syrup‚ and only 20% actual gum material. People do not typically swallow gum‚ so they pay very little attention to the ingredients. The assumption is that if it is not swallowed‚ then it
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