Elimination Reactions ________________________________________ As described previously‚ primary alkyl halides generally undergo substitution reactions with simple nucleophiles by an SN2 mechanism. Secondary alkyl halides‚ often react with simple basic nucleophiles to give a mixture of products arising from both substitution and elimination. As with substitution reactions‚ the rate at which elimination reactions proceed can be proportional to both the concentration of the base and the concentration
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Polymerization reaCTIONS polymers are high-molecular-weight compounds‚ fashioned by the aggregation of many smaller molecules called monomers. Ex. plastics that have so changed society and the natural and synthetic fibers used in clothing are polymers. Classification of polymers Homopolymers - consist of repeated long chains or structures of the same monomer unit. Ex. PVC(polyvinyl chloride) Copolymers - polymers that consist of more than one molecule. Trimers - molecules consisting
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My Reaction to Apollo 13 The movie Apollo13 is great but little kind of boring. Tom Hanks is a great artist! He is my idol. One of his great movie is Forrest Gump. By the way‚ The Apollo13 is America’s third moon landing mission. En route‚ an onboard explosion deprives their spacecraft of most of its oxygen supply and electric power‚ forcing NASA’s flight controllers to abort the Moon landing‚ and turning the mission into a struggle to get the three men home safely. I thought Jim’s wife was his
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ENGINEERING Reaction Engineering CGC035 / CGC052 Problem Sheet 3 - Fluid-fluid reactions 1. The reaction rate for the heterogeneous reaction A(g) + B(l)→ products is second order according to the expression -rA=kCACB and it is relatively slow compared to mass transfer so it takes place in the bulk of the liquid. Combine the following rate expressions for diffusion through the gas and liquid films‚ -rA=kAga(pA-pAi) and -rA=kAlaCAi-CA‚ with Henry’s law pAi=HACAi and the reaction rate
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Chemical Reactions Chemical Change • reorganization • original substances form new substances with different formulas • may or may not involve a change of state • symbols used to describe chemical reaction are known as a chemical equation • Chemical equations do not have equal signs (=) they have an arrow Chemical Equations • Must follow the Law of Conservation of Matter • atoms can neither be created or destroyed during a chemical reaction • What
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there hard work. II. RATIONALE Field trips are important because it gives students a chance to learn hands on. Also‚ traveling will give them a chance to see different places and learn new things up close and personal. Field trips are good learning tools which many universities always do. III. OBJECTIVES To be able to see personally how an industrial company works. To know how to manage an industrial company. To know the purpose and how innovation in an
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Technological Institute of the Philippines Bachelor of Science in Electronics and Communications Engineering CS 100L2-ICDL / ES12FB2 Assignment # 3 Flores‚ Ian Peter Hanie D. Prof. Mon Arjay Fernandez Malbog Jan. 15 2013 Computer Number System Binary‚ hexadecimal‚ and octal refer to different number systems. The one that we typically use is called decimal. These number systems refer to the number of symbols used to represent numbers. In the decimal system‚ we use ten different symbols:
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The spry meadows are held captive in binding dismal white Until Winter’s final breath meets an end with desolate entice For one frigid grasp elongates all branches with such contrite Shall the sun be revenged‚ for it pertains the snow with vice? Or is there proof that an intolerable moment not at all exists? Let it be that patience is evermore a virtue‚ evermore an imperative embrace Composure dissolves the unforgiving snow to bring warmth‚ the light persists Skies masked with thick swirls
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In an emergency room‚ people’s lives often depend on the medical personnel’s quick reaction and competent care. Incidents as varied as automobile accidents‚ heart attacks‚ slips and falls‚ childbirth‚ and gunshot wounds that require immediate medical attention. These are just some of the common scenarios that usually unfold in the emergency room (ER) of a hospital. Of course‚ among the most important players are the doctors‚ the nurses‚ and other medical personnel whose functions and responsibilities
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ICCSE ENGLISH LITERATURE POETRY COURSEWORK In the poems you have studied a recurring theme is that of ‘loss’. This can take many forms: death; identity; hope or loss of innocence Discuss the poets’ treatment of any aspect of the theme of loss in at least 6 of the poems you have studied. A minimum of 3 poems should be taken from the anthology. Poems for discussion: In detail - Prayer Before Birth (Louis MacNeice) - Do not go gentle into that good night (Dylan Thomas) -
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