Chemistry SL Internal Assessment: Enthalpy Change Design Lab Experiment: Reaction of distilled water and solid sodium hydroxide RESEARCH QUESTION How does the heat released during the reaction between distilled water and Group 1 elements (lithium‚ sodium and potassium) vary as one goes down the group? OBJECTIVE The objective of the experiment is to measure the heat change during the reactions with minimal heat loss to the surroundings. MATERIALS The materials to be used in this experiment
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guess paper 1. Express the rate of following reaction in terms of disappearance of hydrogen in the reaction. 3H2(g) + N2(g) 2NH3(g) 2. What is peptisation? 3. Write Reimer Tiemann reaction. 4. Why is CO stronger ligand that Cl-. 5. Write structure of 2-(2-Bromophenyl)butane. 6. Complete the reaction C6H6+R COCl 7. Why pentahalides more covalent than trihalides? 8. What is difference between nucleoside and nucleotide? 9. Explain the following- (a) Gattermann Koch
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requirements. More detailed information about the course can be obtained by referring to the guide for this subject‚ which is available on the subject page of the IB online curriculum centre (OCC) website (http://occ.ibo.org) and can also be purchased from the IB store (http://store.ibo.org). © International Baccalaureate Organization 2010 Nature of the subject Economics is a dynamic social science‚ forming part of group 3—individuals and societies. The study of economics is essentially about
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Chemistry Internal Assessment: Determining the Enthalpy Change of a Displacement Reaction AIM: To determine the enthalpy change for the reaction between copper(II) sulfate and zinc. BACKGROUND THEORY: Bond breaking is endothermic while bond forming is exothermic. The reaction between copper(ll) sulfate and zinc is exothermic as the energy required to form the bonds of the products is greater than the energy required to break the bonds of the reactants. In an exothermic reaction‚ heat is
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barriers – some countries apply high import tariffs for motorcycles and strict greenhouse gas emissions standards 2) Competitive environment – most of its competitors are from Europe‚ Japan and China where they can influence their home markets 3) Limited customers due to high prices – it makes difficult to penetrate developing countries where disposable income is relatively low. 2. How can Harley benefit from expanding abroad? What types of advantages can the firm obtain? What advantages acquired
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Martijn Pas Candidate No. 2613-033 Written Task 2 HL Part 3: Literature - texts and contexts The Relation of Certain Social Groups From the Novel ‘1984’ With Real Social Groups. The lower working class. In a totalitarian environment‚ they can be best described as the group of people without a voice‚ a group that has to live according to the rules of the totalitarian regime‚ which often rules with an iron fist. In an authoritarian system‚ this group does have a larger sphere
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Ba(NO3)2 + 2AgCl) Research Question: How will the amount of Barium Chloride and Silver Nitrate affect how much Silver Chloride is produced? Hypothesis: If there is one mole of BaCl2 in the reaction‚ then two moles of AgCl will be produced. Variables: Independent: Amount of the compound‚ BaCl2‚ in grams. Dependent: Amount product produced‚ AgCl‚ in grams. Materials: * 4 -grams of Barium Chloride (BaCl2) * 8 -grams of Silver Nitrate (AgNO3) * Analytical Balance * 2- Volumetric
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Biology HigHER lEvEl PaPER 2 Candidate session number Tuesday 2 November 2010 (afternoon) 0 2 hours 15 minutes 0 INSTRUCTIONS TO CANDIDATES Write your session number in the boxes above. Do not open this examination paper until instructed to do so. Section A: answer all of Section A in the spaces provided. Section B: answer two questions from Section B. Write your answers on answer sheets. Write your session number on each answer sheet‚ and attach them to this examination paper and your cover sheet
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9.2.5 Chemistry past paper questions 2001 Question 16 (3 marks) Radioisotopes are used in industry‚ medicine and chemical analysis. For ONE of these fields‚ relate the use of a named radioisotope to its properties. Medicine – Iodine Ingested iodine concentrates in the thyroid gland and so iodine 131 can treat thyroid disorders (e.g. tumours) Iodine 131 has a half life of just over 8 days‚ emits beta particles and gamma rays as it decays. This half life is long enough for it to be transported form
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One Hundred Years of Solitude‚ by Gabriel Garcia Marquez‚ takes the spotlight for this reflective essay. The mythical town of Macondo is the main setting for the story during a time of turmoil in Latin America. Gabriel Garcia Marquez reveals an exciting world of fantasy and realism by cleverly inserting works of fiction at unpredictable intervals. This addition of magical realism can be found throughout the story. The mention of flying carpets at the carnival within this fantasy world portrays a
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