Nicole Lopez-Alvar Paolo DiFabio Dramatic Literature- Section A 26 July‚ 2010 Hamlet- Statement #2 Throughout literature‚ one role that has‚ and will always be‚ controversial yet crucial to the human condition is the idea of truth and falsehood‚ an idea that is brilliantly portrayed in William Shakespeare’s Hamlet‚ where the protagonist Hamlet encounters this double standard. Hamlet is known as a truly universal character because he represents something more than a depressed prince in
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mammals is the suprachiasmatic nucleus (SCN)‚ which is located in the hypothalamus. It receives information about lights from the eye through the optic nerve. This happens even when our eyes are shut‚ due to them being so thin‚ meaning that if our endogenous clocks are slow (e.g. because the sun rises earlier than the day before) morning light automatically shifts the clock ahead‚ putting the rhythm back in sync with the day. At night‚ when there is no light‚ the SCN then sends a message to the pineal
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control it. For example‚ the theory is that the suprachiasmatic nucleus has an involvement in controlling the sleep-wake cycle. Ralph et al investigated how the suprachiasmatic nucleus (SCN) may be involved in the sleep-wake cycle. By examining hamsters that had a 20-hour sleep-wake cycle‚ he was able to extract the SCN and enter it into other hamsters with a 24-hour cycle. Ralph found that the group of hamsters with the 24-hour sleep-wake cycle eventually had a 20-hour sleep-wake cycle. Ralph’s study
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N12/4/CHEMI/SPM/ENG/TZ0/XX 88126104 CHEMISTRY standard level Paper 1 Friday 9 November 2012 (afternoon) 45 minutes INSTRUCTIONS TO CANDIDATES • Do not open this examination paper until instructed to do so. • Answer all the questions. • For each question‚ choose the answer you consider to be the best and indicate your choice on the answer sheet provided. • The periodic table is provided for reference on page 2 of this examination paper. • The maximum mark for this examination
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divided into three different groups. Group 1‚ those on Part A‚ were set-ups that investigated the reaction of the permanganate (MnO4-) ion in different media. Group 2‚ those on Part B‚ were set-ups that were done in order to study the reaction of Fe(SCN)2+ ion with that of elemental zinc. While the last‚ Group 3‚ those on Part C were set-ups that investigated the reaction of Fe4[Fe(CN)6]3 with that of elemental zinc. Group 1‚ test tubes A to C‚ vary greatly from each other. This is probably because
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RESULTS AND DISCUSSION A redox titration involves the transfer of one electron from one reactant to another. The two reactions happen simultaneously.1 This experiment employed titration involving the use of iodine. Iodometry is the titration process where iodine is used as titrant for strong reducing agents. Another type of titration where iodine is involved is called iodometry‚ where iodine “is produced in-situ from the quantitative oxidation of iodide and then subsequently titrated with thiosulfate
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test tube containing the chemical equilibrium of chromate/ dichromate‚ we will add NaOH while in another we will add KCl. The second part involves the equilibrium and forming of Ferric thiocyanate complex ion: Fe3+ + SCN- ⇌ FeSCN2+ The color of the reactants Fe3+and SCN- are neon yellow and colorless respectively. The color of the product FeSCN2+ however is blood red. In five test tubes‚ one will be the control and four will be the experiments. In the four experiment test tubes‚ we will
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Experiment 5 Solution Preparation 1. Why should the solutions be prepared with 0.10M HCl used as solvent? a. What will happen to Fe3+ if the solution was not prepared using 0.10M HCl? b. Give the balanced equation for the 1st hydrolysis of Fe3+. c. What is the color of the product of 1st hydrolysis of Fe3+? d. What is the effect of the product of 1st hydrolysis to the absorbance of the solution? Determination of Analytical Wavelength 2. Why should the
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KFe(III)Fe(II)(CN)6(s) + 2K+(aq) To determine the presence of Fe3+‚ 0.10 M of KSCN was used. The product was a blood red solution. The reaction’s balanced equation is: Fe(NO3)2 (aq) + 2 KSCN (aq) Fe(SCN)2 (aq) + 2 KNO3 (aq) It has a net ionic equation of: Fe3+(aq) + SCN-(aq) → FeSCN2+(aq) 1.00 M HCl‚ meanwhile‚ was used to determine the presence of Ag+ in the resulting supernate. This resulted to formation of white precipitate. The reaction
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PF had suffered no adverse effects from the medication that the duty doctor did not need to be called at the late hour (0200hrs). Agreed that the consultant would be notified in the morning and the SCN would be automatically made aware due to the datix form being completed. On discussion with the SCN following the error‚ I now realise that I made some procedural mistakes when managing the
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