Summary This experiment will measure the rate of oxidation of iodide ions by persulphate ions to derive the rate law for the reaction. Starch will be added to the reaction to facilitate the measure of time during the reaction. The reactant solutions will contain (NH4)2SO4 and KI‚ represented as: (NH4)2S2O8 + 2KI -> I2 + (NH4)2SO4 + K2SO4 This can be simplified to: S2O82- + 2I- -> I2 + 2SO42- These equations can only be carried out and be visible after the iodine has completely
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Corporate Placement Test Part A. Try to answer all forty five questions. There is one mark per question. Write one answer from the four possible answers. 1 Where are _____ C from? a) she b) his c) you d) Tom 2 Sam isn’t _____ C . a) doctor b) job c) a doctor d) work 3 _____ A are three hotels in the city centre. a) There b) We c) Where d) Our 4 Hello‚ Marta. Nice to _____ A you. a) meet b) give c) speak d) show 5 Volkswagen is _____ A German company. a) a b) old c) in d)
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Chemical Reactions and their Classifications 26 October 2012 Abstract: Ordinary laboratory ware was used to determine how many of what type of chemical reactions occurred. This yielded three decomposition reactions‚ four substitution reactions‚ and three metathesis reactions. Introduction There are many different types of chemical reactions in the study of chemistry; A composition reaction (also known as synthesis) is defined as the reaction that occurs when two single compounds combine in
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Week 10: Oxidation and Reduction Reactions: The Reactions of Copper Data: Part I: Preparing a solution of copper (II) nitrate Initial mass of copper wire: .520g Mass of copper wire after vigorously scouring: .518g Observations of Copper (II) ribbon mixed with HNO3: Solution turned green. Thick brown gas formed. Copper (II) bubbled vigorously. Cu (II) dissolved‚ solution appeared green/blue. After the addition of H2O a blue crusty precipitate formed. Part II: Synthesis of solid copper
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Answers to Unit 9 1)There are different uses of foster care placements and amongst them the main ones are as follow: *EMERGENCY-where children need to stay somewhere safe for a few nights‚ *SHORT -TERM-cares look after children for a few weeks /months while plans are being made for children’s future‚ *SHORT BREAKS-for disable children‚with special needs or behavioural difficulties who stay for a while with a family so they parents/carers can have a break‚ *REMAND-for young people remanded
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Reaction Paper The studies reflect that the fact in the Philippines‚ sons and daughters are raised and treated differently within the family‚ in accordance with parents’ gender expectations that minor society’s own prescriptions for what is appropriately masculine and feminine. The studies reveals some of the disadvantages experienced by the girl-child stemming from the restrictions she has to contend with compared to the boy –child. She is also given more responsibilities inside the house because
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Course Title: RADIOGRAPHIC TECHNIQUE AND FILM PROCESSING/ANALYSIS 1 Course Outline: I. Processing Room Design (2 Hours Lec.; 4 Hours Lab.) 1. Size and location 2. Construction considerations 3. Entrances 4. Lighting and ventilation 5. Drainage system II. Imaging Accessories (8 Hours Lec.; 14 Hours Lab.) 1. Radiographic Film 2.1. Types of Films 2.2. Film construction 2.3. Handling and storage 2. Film holders 3.4. Cardboard film holder
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Samples of DNA with the target sequence are heated to a reaction temperature of 94-96˚ C that causes DNA melting of the DNA template without denaturing the enzyme by disrupting the hydrogen bonds between complementary bases of the double helical DNA‚ yielding single-stranded DNA molecules(“How Is PCR (polymerase Chain Reaction) Done?”). DNA polymerase does not get degraded in such high temperatures since the DNA polymerase used in this reaction is thermostable as it is isolated from thermophilic bacteria
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Chapter 1 Midnight in the deserts of Afghanistan‚ at an Al-Qaida training camp. Gunshots echo throughout the camp. Young boys come running out of dust covered tents. Together they number fifty. All of them were half asleep and hungry‚ shivering in the ice cold night air. The story of these boys is the same. They were taken from their families at an early age and brought here. One in particular stands out; he is the son of a general who fights Al-Qaida‚ and serves the President of Afghanistan
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Dominick Prince Partner: Ryan Potts Reactions of Copper Due: Monday January 14‚ 2013 Beginning of Class Block: 5 Purpose / Safety: Purpose: 1. Observe some chemical reaction of copper and its compounds. 2. Write word and formula equations to represent these reactions. Safety: 1. Wear goggles and a lab apron or coat. 2. Tie back long hair and secure loose clothing before working with an open flame. 3. Corrosive substance; avoid contact with skin‚ eyes‚ and clothing
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