Serina Pooja Sowman | Practical 7: Determination of Hardness in Water | | | | | 10/3/2012 | | Aim: To determine the different types of hardness and alkalinity found in the water by titration methods. This is used to calculate the concentrations of calcium and magnesium found in the water. Principles: The hardness of water is determined to provide a measure of the quality of water for household and industrial use. Hard water is not a health hazard. Drinking hard water
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CHEM 1105 Experiment 4: Determination of a Chemical Formula Introduction When atoms of one element combine with those of another‚ the combining ratio is typically an integer or a simple fraction. The simplest formula of a compound expresses that atom ratio. When two or more elements are present in a compound‚ the formula still indicates the atom ratio. To find the formula of a compound we need to find the mass of each of the elements in a weighed sample of that compound. For example‚
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Communist Party of the Philippines (CPP)‚ and the Muslim separatist movement of the Moro National Liberation Front (MNLF). One of his first actions was to arrest opposition politicians in Congress and the Constitutional Convention. Initial public reaction to martial law was mostly favourable except in Muslim areas of the south‚ where a separatist rebellion‚ led by the MNLF‚ broke out in 1973. Despite half-hearted attempts to negotiate a cease-fire‚ the rebellion continued to claim thousands of military
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Slide 3 Oceanic - is an American steamer. Protestant pastor – he had a long white beard and was always chanting prayers every moment. Slide 7 Juan Perez Caballero – Secretary of the Spanish Legation in Japan. * Rizal accepted the offer of Juan Perez Caballero Slide 9 Niponggo – Japanese language * Rizal has the features of a japanese. * Because of the embarassment rizal study and learn the japanese language. He read books in the Japanese libraries‚ museums‚ art galleries. And shrines
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Endothermic and Exothermic reactions A chemical reaction is a process in which one or more substances are chemically changed into one or more new substances. A chemical reaction may involve the motion of electrons in the forming and breaking of chemical bonds. Therefore when a chemical reaction takes place‚ energy is transferred to‚ or from‚ the environment. A Chemical reaction can either be exothermic or endothermic. Exothermic Reactions During an Exothermic Reaction a transfer of energy to the
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Determination of the Calorific Value of Fuels Aim: To quantify the amount of energy produced by different fuels and to determine which fuel is more efficient (has a higher calorific value). Introduction: The easiest way to achieve our aim is by heating a substance with a known specific heat capacity and using the energy released from burning our fuels. This will give us the value of the heat energy released by the combustion of our two fuels. The chemical reaction for combustion: FUEL
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This experiment will test the suggestion that the enthalpy change between a metal and a solution of a salt is related to the relative position of the two metals in the reactivity. Presumably the further apart in the series the bigger the enthalpy change will be. The experiment is as follows‚ 1) Zn(s) + CuSO4(aq) ZnSO4(aq) + Cu(s) 2) Zn(s) + Pb(NO3)2(aq) Zn(NO3)2 (aq) + Pb(s) Both of the solutions will be in 1mol.dm-3 Apparatus: Distilled Water Polystyrene Cup
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Food Chemistry 138 (2013) 227–233 Contents lists available at SciVerse ScienceDirect Food Chemistry journal homepage: www.elsevier.com/locate/foodchem Analytical Methods Determination of volatile N-nitrosamines in meat products by microwave-assisted extraction coupled with dispersive micro solid-phase extraction and gas chromatography – Chemical ionisation mass spectrometry Man-Chun Huang‚ Hsin-Chang Chen‚ Ssu-Chieh Fu‚ Wang-Hsien Ding ⇑ Department of Chemistry‚ National Central
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Name: ____________________________________Form:________ Coursework unit 1 Section checklist: This is an overall checklist of all the sections and ‘extras’ that you need to include in your project. Tick them off as you complete them REMEMBER: Leave the contents page until last as you need to number all the pages first! Section Heading Completed Title page (including name‚ candidate number and title of your project Contents (list all your sections and give the page numbers)
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EXECUTIVE SUMMARY ICE-CREAM LAB was founded by form of partnership‚ who are Kong Sze Wen‚ Yau Tze Xuan‚ Tan Sze Pei‚ and Tan Shu Chun in August 2016‚ located at LK2-05‚ Jalan Laman Komersial Areca‚ Bandar Baru Nilai‚ 71800 Putra Nilai‚ Negeri Sembilan‚ which was nearby INTI INTERNATIONAL UNIVERSITY COLLEGE and Nilai Spring Resort. Our main objective is to implement more types of products‚ satisfying customers with a high-quality product‚ and taking of major market share of ice cream market through
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