different compounds are being worked with – potassium iodide‚ lead (II) nitrate‚ acetic acid and sodium bicarbonate. The purpose of this experiment is to determine whether or not a reaction has taken place using qualitative and quantitative analysis. Procedure Part 1 - Qualitative observations of both potassium iodide and lead (II) nitrate were recorded in a table. Then‚ the equipment and chemicals needed were gathered – potassium iodide and lead (II) nitrate‚ a graduated cylinder‚ Erlenmeyer
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Water-We studied the difference between mineral oil and water using a hand lens. * Making iodine in water- We added one drop of potassium iodide and sodium hypochlorite (bleach) then mixed the two together producing iodine. * Making iodine in oil-We added two drops of mineral oil‚ one drop of water on the mineral oil‚ then added one drop of potassium iodide and sodium hypochlorite. Producing Iodine. Results: In class we conducted four experiments on
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Dishwashing [pic] A person dishwashing See also wash-up period‚ the period immediately before Parliament is dissolved‚ when outstanding Parliamentary business is concluded. The term dishwashing refers to cleaning eating and cooking utensils‚ in addition to dishes. In British English the term washing up is more common. There are cultural divisions over rinsing and drying after washing.[citation needed] Implements Dishwashing is usually done using an implement for
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To carry this out‚ our method combines sodium iodide and common bleach as the oxidizing agent in aqueous alcohol as the solvent. Balanced Chemical Equations: Physical Properties: Name of Chemical Chemical Structure Molar Mass (g/mol) BP/MP (ºC) Density (g/mL) Mass/Vol. Used Purpose 3-methoxy-4-hydroxybenzaldehye C8H8O3 152.1494 MP=81-83‚ BP=285 NA 0.1g Solute Ethanol CH3CH2OH 46.0688 MP=-114.1‚ BP=78.3 0.789 2.0mL Solvent Sodium Iodide NaI 149.8943 MP=661‚ BP=1300 3.667 0.117g Catalyst
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Phenyl Salicylate per parts A‚ B‚ C * 2 g Potassium Iodide per parts A‚ B‚ C * 2 g Sodium Chloride per parts A‚ B‚ C * 2 g Sucrose per parts A‚ B‚ C * 6 Bunsen Burners * 6 Test Tubes with 25 ml Ethanol each * 6 Test Tubes with 25 ml Water each * 6 100 ml beakers with 50 ml Water each * 10 g Calcium Chloride per parts D * 10 g Citric Acid per parts D * 10 g Phenyl Salicylate per parts D * 10 g Potassium Iodide per parts D * 10 g Sodium Chloride per parts D
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transportation of the highly flammable gas. It is very common to see PTFE manufacturers also manufacture TFE. The polymerization process uses a very small amount of other chemicals as initiators. Various initiators can be used‚ including ammonium persulfate or disuccinic acid peroxide. The other essential ingredient of the polymerization process is water. Polymers in the natural
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arteries which gives it a deep red colour. (Cohen and Wood 2000) The two parathyroid glands are located between two layers of the capsule that covers the thyroid gland. It is an important feature as it monitors the circulating concentration of calcium ions in the blood. (Martini 2004) The functional unit of the thyroid gland is the follicle‚ a spherical group of cells that form a colloid from a casing protein-rich storage material. (Nussey and Whitehead 2001) Thyroglobulin is a protein synthesised
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Cloud seeding can be performed from the ground using a launcher with silver iodide cartridges‚ that get shot into the clouds. Or the process can be done from an aeroplane that releases the silver iodide into the clouds from above. Using aeroplanes is the preferred method as it is more accurate. Ground Based Cloud Seeding is used in places where there is low level clouds over difficult terrain
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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education *6145201818* CHEMISTRY Paper 3 (Extended) Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number‚ candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use a pencil for any diagrams‚ graphs or rough working. Do not use staples‚ paper clips‚ highlighters‚ glue or correction
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electric water bath OR hot plate) * 250 cm3 beaker * boiling tube * anti- bumping granules * forceps * test tube holder * white tile * leaf to be tested (hibiscus leaves are excellent) * 90% ethanol * iodine/potassium iodide solution PROCEDURE: The video above shows the steps in Testing a Leaf for the Presence of Starch. The Procedure outlined below is slightly different. 1. Remove a green leaf fom a plant that has been exposed to sunlight for a few hours
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