2013 “Reaction Classes and Pericyclic Reactions” ● 4 Lectures ● Recommended Texts: (i) J. March “Advanced Organic Chemistry”‚ p 839‚ `---Edn.‚ Oxford (W); Warren (2) Ch 34‚ 35. Syllabus 1) General principles (a) Reaction classes (i) Heterolytic (ii) Homolytic (iii) Pericyclic (b) Pericyclic Reaction Types 2) Electrocyclic Reactions (a) Definition and examples (b) Stereochemical aspects and the Woodward and Hoffmann rules 3) Cycloaddition Reactions (a) Definition
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produced the most oxygen of all three trials. Heat tends to increase the rate of chemical reactions‚ explained in the article Temperature Effects (Introduction to Enzymes) by Chris Jamison. “Like most chemical reactions‚ the rate of an enzyme-catalyzed reaction increases as the temperature is raised. A ten degree rise in temperature will increase the activity of most enzymes by 50 to 100% . Variations in reaction temperature as small as 1 or 2 degrees
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IB Physics Internal Assessment Andy Tang Research Question In this internal assessment‚ I am given a cantilever to find the physical properties of it. I decide to investigate the relationship between the force I act on one side of the cantilever and the maximum acceleration the tail can reach. This experiment will be also showing the elasticity of the cantilever. Since I pull down one side of it and fixed the other side‚ when I cut the string‚ it will bounce up and down until all the internal
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Network Design: Logical and Physical Design In networking terminology‚ the term network topology refers to the entire structure of the network. There are two primary parts to the topology definition: the physical design‚ which is the actual layout of the wire (media)‚ and the logical design‚ which defines how the media is accessed by the hosts. The physical designs that are commonly used in networks are the Bus‚ Ring‚ Star‚ Extended Star‚ Hierarchical‚ and Mesh. A bus topology uses a single
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The hypothesis If a chemical reaction occurs‚ then there will be indicators of a chemical change‚ was supported throughout this experiment. Throughout this experiment there were several reactions that took place‚ and an indicator of such chemical reactions could be seen throughout each one. The first piece of identifiable evidence was present in the first step‚ which was when copper (II) nitrate and sodium hydroxide were combined. When stirred‚ a blue precipitate formed at the bottom of the test
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UNIT IB – FAQs 1. Outline signs that could indicate to an employer that an employee has an alcohol problem. (10) The signs that could indicate to an employer that an employee has an alcohol problem 1. The specific sign such as mood changes. 2. The unusual irritability or aggressive or erratic behavior. 3. A tendency to become confused. 4. Abnormal fluctuations in concentration and energy levels. 5. Impaired job performance and hence reduced productivity. 6. A tendency to suffer an increased
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Introduction Newspaper is a publication which it main function is to report news. Most newspapers contain information for readers such as a weather report‚ television schedules‚ and also listing of stock prices. They also provide commentary on current politics‚ economics‚ and art and culture. In most cases newspaper depends on commercial advertising for their income at various degrees. By the time readers see or read a newspaper‚ most of them have already learned of the breaking news through
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conjugate acid (or base) of any Brønsted–Lowry base (or acid). © IBO 2007 and oxonium ion). In these terms the above equation becomes HX (aq) + H2O (l) H3O+ (aq) + X– (aq) One of the first theories to explain the fact that all acids had similar reactions‚ was that of Arrhenius. This proposed that in aqueous solution all acids‚ to some extent (dependent on the strength of the acid)‚ split up to form a hydrogen ion and an anion‚ i.e. for an acid HX: This also emphasises the fact that water is not
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Extended Essay Guide Business & Management 2010 - 12 Introduction 4 The extended essay is: 4 Aims 5 Assessment objectives 5 Responsibilities of the student 5 Recommended: things to do 6 Recommended: things to avoid 7 Writing and researching the extended essay 8 Writing the extended essay 8 Formal Presentation of the extended essay 9 The length of the extended essay 9 Title 9 Abstract 9 Contents page 9 Illustrations 10 Appendices‚ footnotes and endnotes 10 The research
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Economy - overviewzz Philippine GDP grew 7.6% in 2010‚ spurred by consumer demand‚ a rebound in exports and investments‚ and election-related spending‚ before cooling to 3.7% in 2011. The economy weathered the 2008-09 global recession better than its regional peers due to minimal exposure to troubled international securities‚ lower dependence on exports‚ relatively resilient domestic consumption‚ large remittances from four- to five-million overseas Filipino workers‚ and a growing business process
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