CHEMICAL KINETICS RESULTS AND DISCUSSION The balanced equation of the reaction between sodium thiosulfate and Hydrochloric acid is: S2O32- (aq) + 2 H+ (aq) SO2 (g) + S (s) +H2O (l) Using beakers with the same diameter was very important in conducting the experiment. If different sizes were used‚ the visibility of the “x” on the paper beneath the beaker could disappear from view too early or too late than the hypothetical time depending on the depth of the solution. It was also significant
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Atoms‚ Airs‚ and Chemical Bonding Rich McConnell‚ CH-201 Grantham University Atoms‚ Airs‚ and Chemical Bonding 1. Alcohol in our digestive system reacts with oxygen gas to form carbon dioxide and water. How many grams of carbon dioxide are released if a 10.00 g alcohol sample reacts with 20.85 g of oxygen gas and produces 11.77 g of water? Answer: 19.08g CO2 2. Using the periodic table‚ fill in the missing information in the following table: Protons Neutrons Electrons Isotope Symbol 27 32 27
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Introduction: A chemical reaction involves the breaking and forming of bonds in order to create the necessary energy required to cause movement. Each reaction is catalyzed (an increase in rate because of a present catalyst) by a specific enzyme. Enzymes are able to denature proteins‚ meaning that a protein loses its original shape by uncoiling‚ giving it a random‚ unstructured shape. The pineapple plant contains bromelain which‚ because of its unique characteristics‚ keeps gelatin from thickening
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Chemical Gas Tests Procedure Part 1: Hydrogen and Manganese Dioxide 1. Inserted 4mL of hydrogen into a test tube 2. Scooped a little amount of manganese dioxide on the end of a wooden splint 3. Allowed the tip of the splint to flame using the Bunsen Burner 4. Allowed the reaction to proceed for a total of 15 seconds. 5. Placed the glowing splint into the test tube 6. Recorded the results Part 2: Magnesium strip and Hydrochloric acid 1. Poured 3mL of hydrochloric acid into a test
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MANAGING RISKS OF HAZARDOUS CHEMICALS Draft Code of Practice Table of Contents FOREWORD 3 SCOPE AND APPLICATION 3 1. INTRODUCTION 5 1.1 Who has health and safety duties in relation to hazardous chemicals? 5 1.2 The meaning of key terms 6 1.3 What is required to manage the risks of hazardous chemicals? 7 2. HOW TO IDENTIFY HAZARDS 10 2.1 Labels and Safety Data Sheets (SDS) 10 2.2 Unlabelled containers 10 2.3 Hazardous chemicals generated or manufactured in
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Case Analysis: Diamond Chemicals plc Group Members PREPARED By: Kumar Vivek MP13031 Rajeev Das MP13040 Sanjiv Ranjan MP13048 Suraj P.Upadhyay MP13062 Vishav Bandhu Sharma MP13070 Case Background Diamond Chemicals is a large worldwide chemicals producer with two factories in Liverpool England andRotterdam Holland. Both of their plants were built in 1967 with annual output of 250‚000 metric tons polypropylene. Compare with low-cost producer‚ the production cost per ton is 1.09 which
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Summer Mitchell 10/04/13 Analysis and Conclusion 1. Why was the water tested for each of the initial chemical tests? The water was tested for each initial chemical test because it served as the controlled variable. Since water is pure oxygen and hydrogen unlike Glucose and Starch‚ one variable may be observed. 2. Biuret reagent will turn your skin brownish-purple. Explain why this occurs. Biuret reagent will turn your skin a brownish-purple because Iodine detects protein in a substance
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VCE Chemistry Week 1 - Chemical Analysis (1) Horizen Education February 8‚ 2013 1 1.1 Review: Gravimetric and Volumetric Analysis Gravimetric Analysis Solubilities Always soluble: Usually soluble: Exceptions: Na+ ‚ K+ ‚ NO3− ‚ CH3 COO− ‚ NH+ 4 Cl− ‚ I− ‚ Br− i. Sodium carbonate and Silver nitrate ii. Iron (II) sulfate and Lead (II) nitrate iii. Sodium nitrate and Nickel sulfate iv. Potassium hydroxide and Copper (II) nitrate v. Sodium sul de and Cadmium sulfate Ho
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Mahlaqua Imran Chemical and Physical Changes Lab 09/09/13 I. Purpose: Identify the different changes as a physical change or a chemical change. II. Safety: You may need safety goggles and gloves. III. Pre-lab questions: 1. Identify the following as either chemical or physical changes: a. Striking a match Chemical b. Food spoiling Chemical c. Breaking a glass Physical d. Mowing the grass Physical
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INTRODUCTION Since 1952 a subsidiary of British Company for chemical manufacturer was established in Ghana‚ named Wilson Chemical (Ghana) Ltd. There were three reasons for its success: 1. Fertilizer as the primary product in an agricultural based economy 2. The company employed many natives in top positions 3. Appointed a native Ghanaian graduated from Oxford‚ Joseph Okono‚ as the president of Wilson Chemical (Ghana) Ltd. Under Mr. Okono’s management‚ the company achieved a great success in
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