22nd January 08 Describe Law And Order In C19th London London in the late 19th century was quite clearly split into two main classes‚ rich and poor. There wasn’t really an in-between‚ and not only were the classes split by income‚ but also where they lived. The rich mainly resided in the West End of the great city‚ while the poor in the East End. At the time London was one of the largest cities in the world‚ and therefore one of the main areas of attraction and action for all. People would
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Grignard Reaction: Synthesis of Triphenylmethanol Hai Liu TA: Ara Austin Mondays: 11:30-2:20 Abstract: In this experiment‚ phenylmagnesium bromide‚ a Grignard reagent was synthesized from bromobenzene and magnesium strips in a diethyl ether solvent. The Grignard reagent was then converted to triphenylmethanol‚ a tertiary alcohol with HCl. The reaction for phenylmagnesium bromide was: The reaction for Grignard to triphenylmethanol was: In the formation of the Grignard reagent
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A. Introduction Title: The effect of reading Shakespeare on reaction time Research Question: Does reading a passage of Shakespeare decrease a person’s reaction time while completing a puzzle? One day in class‚ I was reading an interesting article about how people who read and are exposed to Shakespeare and Wordsworth and other renowned writers have better brain activity‚ attention spans‚ and can have more moments of beneficial self-reflection. In the article‚ scientists and psychologists at Liverpool
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Abstract The experiment is to identify the guilty suspect that is present at the crime scene by comparing with the DNA samples. Polymerase Chain Reaction(PCR) is used to amplify the small amount of Deoxyribonucleic Acid (DNA) for forensic or genetic studies‚ which require necessary product and placed in the thermal cycle. Gel electrophoresis is being run in order to analyze and compare the DNA samples at the crime scene with the guilty suspects. Gel electrophoresis is used to separate DNA using an electric
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time it takes for the cross on the bottom of the beaker while the reaction is recurring to disappear. As it can be seen in the graph‚ the higher the temperature the shorter the time is for the Sulphur to be created. If it is looked as one continuous line‚ the first part of the trend line shows a steep‚ straight and constant decrease; then the 2nd part is not as steep and has a more gradual decline. Moreover‚ it shows how a reaction at 20°C a slower time for the cross to disappear compared to 40°C
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Examples of synthesis reactions: 1. Metal + oxygen → metal oxide EX. 2Mg(s) + O2(g) → 2MgO(s) 2. Nonmetal + oxygen → nonmetallic oxide EX. C(s) + O2(g) → CO2(g) 3. Metal oxide + water → metallic hydroxide EX. MgO(s) + H2O(l) → Mg(OH)2(s) 4. Nonmetallic oxide + water → acid EX. CO2(g) + H2O(l) → ; H2CO3(aq) 5. Metal + nonmetal → salt EX. 2 Na(s) + Cl2(g) → 2NaCl(s) 6. A few nonmetals combine with each other. EX. 2P(s) + 3Cl2(g) →
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Introduction There are thousands of reactions happen every second in all living cells‚ and in these reactions‚ resource‚ products and enzyme are three most mainly things. In all chemical reactions‚ there is a activation energy(EA) needed for them. However‚ if the rate of reactions are too low‚ they will not be able to sustain lives. In this case‚ they have enzyme as a protein catalyst. As reaction catalysts‚ enzymes are proteins that adjust the process by initiating the reaction. In this case‚ there are also
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There are three reactions in the iodine clock reaction. The first reaction is IO3-(aq) + 3 HSO3-3 SO4-(aq) + I-(aq)+ 3 H+(aq)‚ where the iodate ions become iodide ions1. The second reaction is 6 H+(aq) +IO3-(aq) + 5 I-(aq) 3 I2(aq) + 3 H2O(l) where the iodate ions become molecular iodine2. The third reaction involves molecular iodine becoming a dark blue starch;I2(aq) + starch blue-black complex3. These three reactions react in a sequence. In any reaction the concentration is exponentially related
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and someone who has their backs. When times get tough who can they rely on? Who will be there to lead and guide the people of the United States? In a world full of problems and negatives there is one man for the job‚ Donald J. Trump. He’s the law and order candidate‚ who will make America safe again through immigration reform‚ great again by turning around a struggling economy‚ while breaking down political barriers as‚ “ the outsider.” The F.B.I (Federal Bureau of Investigation)
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LAB REPORT ON VERIFICATION OF HESS’S LAW Our purpose of doing this lab was to prove the Hess’s law correct. Hess’s law suggests that the enthalpy change of a reaction must be equal to the sum of the enthalpy changes of the related reactions which lead to the original reactions. The following are the reactions at the lab; 1) NaOH ( s) NaOH (aq) 2) NaOH (aq) + HCl (aq) NaCl (aq) + H2O (l) 3) NaOH (s) + HCl (aq) NaCl (aq) + H2O (l) As explained before‚ Hess’s Law states that the enthalpy
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