Investigation How does the concentration of the sodium thiosulfate affect the rate of reaction to hydrochloric acid? contents page 1: contents‚ aim‚ prediction‚ equation‚ diagram page 2: equipment‚ preliminary experiments page 3: page 4: page 5: page 6: page 7: page 8: Aim: In my investigation I am trying to find out how the rate of reaction between sodium thiosulfate and hydrochloric acid gets affected but the concentration of the thiosulfate. Prediction: My prediction is that the increased
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Sodium is a mineral that is present only in small quantities in most natural foods‚ but salt is added‚ often in large amounts‚ in food processing and by cooks to enhance flavor. Sodium is the predominant ion in extra cellular fluid. Sodium (Na) is the predominant cation in extra cellular fluid and its concentration is under tight homeostatic control. Excess dietary sodium is excreted in the urine. The kidney very efficiently reabsorbs the mineral when intakes are low or losses are excessive. Sodium
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Iodine is an element that is critical for normal function of the thyroid gland‚ which is a key regulator of the body’s basic metabolic rate. Iodine is a micronutrient‚ meaning we require only small amounts of it. For example‚ adults need about 150 micrograms of iodine in the form of iodide ion per day. However‚ an insufficient supply of iodide via diet and drinking water causes the non-cancerous enlargement of the thyroid gland known as goiter. Prolonged lack of iodide can lead to loss of thyroid
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JULIA SELORMEY BIO 111 Iodine Description: Is a trace mineral that your body uses in small amounts to synthesize thyroid hormones that are necessary for regulating the body growth‚ development‚ metabolism and body temperature. Most of the iodine in the body is found in the thyroid gland‚ but is found also in the blood and muscles. The body contains approximately 20 to 30 mg of iodine which is mostly stored in the thyroid gland located in front of the neck. Food sources: Milk is the major
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‚‚4(y STRATEGY CLOCK Whereas Michael Porter’s generic approach to competitive advantage gives substantial prominence to low cost‚ Cliff Bowman’s’ Strategy Clock’ looks at generic competitive advantage from a purely market-based perspective (MBV). He argues that competitive advantage is of no value unless it is of value to the customer and that a customer will always have a preference for such products or services over those of competitors. This may seem obvious but managers do sometimes fail to
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is my Grandfather Clock. It was passed down to me from my Grandmother. I use it and admire it every day. It is definitely a work of art to me. Think of all the work that was put into making a Grandfathers clock. The definition of a Grandfather Clock is a clock in a tall freestanding wooden case‚ driven by weights. Grandfather Clocks have been a part of family legacies including my own for generations. My Grandfather clock is a “Ridgeway”. The Manufacturer is Ridgeway Clocks. They are the oldest
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accomplished this goal by creating five reactions containing Sodium Sulfate that would confirm our compound and show its chemical properties. In each reaction‚ we replaced the presence of Sodium Sulfate with our unknown. Our first reaction was the reaction from the sulfate anion test between Sodium Sulfate and Barium Chloride. If the compound was in fact Sodium Sulfate it would produce a white precipitate and it did. The second reaction was first between Sodium Sulfate and Hydrochloric Acid‚ and then
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this experiment was to use Iodine‚ Benedict and Biuret to test the reaction of the following 12 samples: 1% glucose‚ 0.3% glucose-1-phosphate‚ 1% maltose‚ honey‚ 1% sucrose‚ 1%lactose‚ 1% glycogen‚ 1% starch‚ protein‚ beer‚ distilled water and an unknown solution (test tube: 300). The iodine test for starch was to test how would starch reacted if we put iodine in it. The color of starch before the test was clear. The color of the iodine was brown. When you added iodine into starch‚ the result was
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Analysis The 13 Clocks is a fairy tale told by a twentieth century author. Its themes are clearly statements about the moral concerns of the time and perhaps are intended more for adults than for children‚ even though James Thurber used the form of a child’s story. One of the story’s meanings is that a true life is in a way being like a child. Adults responded to Thurber’s message: The book sold well‚ going into nine printings. Thurber had earlier written fairy tales for children as well as
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A neutralization reaction of ethanoic acid and sodium hydrogen carbonate Cristina Li 17th April 2017 Introduction The hypothesis is the balloon will be bigger and bigger with the increase of vinegar. The chemical reaction between the baking soda and vinegar produces bubbles of carbon dioxide gas as part of this acid-base reaction. Sodium hydrogen carbonate (baking
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