flask‚ 1 piece of 50 cm3 of beaker‚ 1 piece of 50 cm3 of conical flask‚ 1 piece of 250 cm3 of separating funnel‚ 1 piece of 10 cm3 of measuring cylinder‚ 1 piece of electronic hot plate‚ oil bath‚ several pieces of anti-bumping granules‚ ice‚ filter paper and filter funnel. Background: Nucleophilic substitution is an important class of organic reaction. In the experiment‚ 1-bromobutane was synthesized through the second order mechanism in the present of concentrated sulphuric acid and sodium bromide
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Nitrous oxide is the most commonly used conscious sedation and anesthesia. Nitrous oxide is a form of conscious sedation that can safely be used for some procedures and some patients in the dental office‚ if all contraindications are explored. Following the procedures and processes recommended by the American Dental Association (ADA) will ensure safe use of nitrous for the patients and the staff. It is vey important for dental professionals to have a complete understanding for the use of nitrous
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CONTENTS Lamm Table of Content now needs to be re-arrange to match labs in body of manual. ORGANISMS IN THE ENVIRONMENT 2 DIFFUSION 3 OSMOSIS 4 PHOTOSYNTHESIS I (STRUCTURE OF THE LEAF) 6 PHOTOSYNTHESIS II (STARCH TEST ON LEAF) 7 PHOTOSYNTHESIS III (IMPORTANCE OF CHLOROPHYLL) 8 NUTRITION I (ENZYME ACTION) 9 NUTRITION II (FOOD TESTS) 11 FOOD TEST INSTRUCTIONS 13 RESPIRATION I (RESPIRATORY SUFACES) 15 RESPIRATION II (STRUCTURE OF A FISH GILL) 16 TRANSPORT IN PLANTS (TRANSPIRATION) 17 RESPONSE I (PUPIL
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also began to admit heat once the sodium borohydride was added. The substance was allowed to stir for two more minutes and then we let it cool to room temperature for about ten minutes so that the precipitate could dissolve. However‚ while cooling bubble began to form at the top of our substance. After cooling‚ we added approximately 10.0 mL of hot water (~76.5 ˚C) and allowed the solution to boil on a hot plate; adding the hot water also caused the solution to become a clear pale yellow solution
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Delhi Jal Board-Summer Training Report 2012 1 Delhi Jal Board-Summer Training Report 2012 Introduction Wastewater is any water that has been adversely affected in quality by anthropogenic influence. It comprises liquid waste discharged by domestic residences‚ commercial properties‚ industry‚ and/or agriculture and can encompass a wide range of potential contaminants and concentrations. In the most common usage‚ it refers to the municipal wastewater that contains a broad spectrum of contaminants
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settle at the top of the water. (oil is not a soluble) 3 Beaker contained vinegar and water‚ the water got a little cloudy and the vinegar smell is very strong. 4 The water and laundry detergent mix had a soapy look to it‚ water also became cloudy. Bubbles were on top. 5 Soil and water‚ the soil has made the water is brown and dirty looking; I can also smell the soil. 6 The oil is still at the top of the water 7 The vinegar smell is still very strong. 8 The water color is still light brown‚ and
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DNA module- DAY I: Hair analysis and DNA extraction Forensic science The story:-127009969500 This weekend‚ biology teacher Prof. Morra was found dead in his apartment. His body was found around 9.00 am by his girlfriend‚ who immediately phoned the police. The police found Prof. Morra lying beside his bed‚ a noose around his neck. At that point it was not clear whether he had been murdered or had tried to commit suicide. There was blood around his face and neck. His hands were covered in blood
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think for some very good reasons. Here are my comments on the case questions. Question 2: Sealed Air created value to its customers by building high performance (technical) product quality in its coated bubbles and by educating the customers about the benefits of coated bubbles through the educational efforts of its salesforce and its brochures. Sealed Air’s salesforce also used “consultative sales approach” and provided problem solving advice to the customers. However‚ there are also
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Bubble-Ology Glycerin Sugar Corn Syrup Introduction The secret to a good bubble is something called surface tension‚ an invisible bond that holds water molecules together. Water is a polar molecule‚ so it has plus and minus ends just like magnets that attract each other. When the water molecules align with each other they stick together‚ creating surface tension. You might think that it is the surface tension of the water that holds the skin of a bubble together. Actually‚ the surface tension
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Grignard Synthesis of Triphenylmethanol from Benzophenone Purpose: The purpose of this experiment was to synthesize the tertiary alcohol triphenylmethanol from a Grignard reagent‚ phenyl magnesium bromide. The Grignard reagent was synthesized from bromobenzene and magnesium and then reacted with benzophenone to produce triphenylmethanol. It was important that water be excluded from the reaction‚ in order to prevent the formation of benzene. The reaction of phenyl magnesium bromide and benzophenone
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