"Chemistry in our life" Essays and Research Papers

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    Questions on Chemistry

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    CUSTOMER CHARTER ACHIEVEMENTS 20131 Statistics complaint is related only to complaints against claims / benefits process in the month of January 2013. Category 1 Pay Temporary Disablement Benefit to the employee within 7 days after all required information and documents received complete. Number of case payments‚ (January 2013) - 4‚470 Number of cases of paid within 7 days‚ (January 2013) - 4‚429 Percentage fee within 7 days‚ (January 2013) - 99.08% Real Case: Men seizures disappointed Sosco

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    Chemistry (Redox)

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    Experiment 1 : Redox Titration Using Sodium Thiosulphate Abstract This experiment is to determine the concentration of oxidizing solution using the iodine/ thiosulphate titration where the reducing solution is potassium iodate solution and the oxidizing solution is sodium thiosulphate solution. Potassium iodate solution which is an oxidizing agent is added into an excess solution of acidified potassium iodide. This reaction will release iodine. Potassium iodide is acidified with sulphuric acid

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    chemistry research

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    Lime scale form when hot water is heated about 61’C. All the acids listed about remove lime scale because the ions in the acids react with the calcium ions in limescale to then form a soluble salt. The acids also react with the carbonates in lime scale to produce water and carbon dioxide. Then the whole solution washes out taking away as much lime scale and possible. Sulfamic acid The advantages of using sulfamic acid as a de-scaler are that it is the faster de-scaler which means it can give

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    Name: Date: Score: /72 INTRODUCTION TO ISOMERISM AND ALKENES EXERCISES 1. Draw the one constitutional isomer that is missing from column 1 of Model 1. (2 points) 2. Draw ten skeletal representations constitutional isomers missing from column 2 in Model 1 as you can. (Hint: Other than cyclohexane‚ there are 11 ways to draw a six-carbon backbone that contains a ring. Plus there are isomers of cyclohexane that do not contain a ring.) (10 points) 3. Are

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    Chemistry Final

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    Lab #1 notes: The Discovery Process Types of microscopes: Dissecting: has 2 eyepieces and used for looking at a fly. Is 3D and used reflecting light Lower magnification‚ higher resolution Compound: has 1 eyepiece and is used for looking at a cross-section of a plant. 2D and uses transmitted light Higher magnification‚ lower resolution Microscope objectives include 4x‚ 10x‚ 40x‚ 100x‚ -As you move to a higher power‚ your field of view decreases -Parcentric: whatever is in the middle of

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    Chemistry Essay

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    Today‚ many countries are depending more and more on nuclear energy to produce electricity. Although‚ nuclear energy can bring many benefits‚ such as nuclear fission‚ which releases no carbon dioxide‚ it also brings many risks to many countries that use nuclear energy. This was proved‚ in many disasters that nuclear energy caused years ago‚ like the Chernobyl Disaster in April 26‚ 1986‚ which was said that‚ “the radiation released was to be 200 times that of Hiroshima and Nagasaki nuclear bombs

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    Questions on Chemistry

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    Assessment 7 Question 1 of 12 The equilibrium constant Kp for the reaction  CO(g) + Cl2(g) ↔ COCl2(g)  is 5.62 x 1035 at 25°C.  Calculate ΔGf° for COCl2 at 25°C.  (ΔGf° for CO(g) = –137.3 kJ/mol at 25°C)   PRIVATE "<INPUT TYPE=\"radio\" NAME=\"null_12_0\" VALUE=\"3\" DISABLED>" MACROBUTTON HTMLDirect A. –66.7 kJ/mol   PRIVATE "<INPUT TYPE=\"radio\" NAME=\"null_12_0\" VALUE=\"1\" DISABLED>" MACROBUTTON HTMLDirect B. 188 kJ/mol   PRIVATE "<INPUT TYPE=\"radio\" NAME=\"null_12_0\"

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    Chemistry Quiz

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    CHAPTER-23 HW. Rahaf AlBathi 121114 Question 1 The electron configuration of a Ni2+ ion is: | A) [Ar]4s23d8 | | B) [Ar]4s23d6 | | C) [Ar]3d8 | | D) [Ar]3d6 | Question 2 The Fe3+ ion has _____ electrons in 3d orbitals. | A) 6 | | B) 5 | | C) 4 | | D) 3 | | E) 2 | Question 3 A ligand is: | A) a molecule or ion that has at least one lone pair of electrons | | B) a nucleophile | | C) a Lewis base | | D) part of a coordination compound |

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    Our Lyceum

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    OUR LYCEUM Our lyceum is quite new‚ it was founded in 1992 and first was known as polytechnical. Actually‚ it was the first lyceum in Gomel region. Now Gomel City Lyceum #1 is one of the most popular educational establishments in our city. It is situated in Khmelnitsky Street in a three-storey building‚ old‚ grey and rather gloomy outside‚ but quite bright and lively inside. Here students of upper classes study profound courses of maths‚ physics‚ chemistry and biology‚ that means‚ there

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    Teaching Og Chemistry

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    improvement of the quality of Science Education. They aid‚ among others: ▪ The effective teaching and learning process and develop the intellectual ability and skills of students; ▪ The acquisition of knowledge and its intelligent application to life situation; ▪ The development of the student’s mind in areas which belong to the affective domain (awareness‚ attitudes and values); ▪ Group effort in the learning activities of students. Hence‚ the following syllabus guides in respect of Goals‚ Aims

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