titanium from the minerals after mining. 3. Cleaning iron – because very corrosive used to remove the oxide layer from iron or steel before they are galvanised or electroplated. Describe the processes used to extract sulfur from mineral deposits‚ identifying the properties of sulfur which allow its extraction and analyzing potential environmental issues that may be associated with its extraction Most sulphur is extracted from mineral deposits using the Frasch process. Superheated stream is pumped
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Assessment task 3 oral presentation summary Description of the experiment * Aim: To observe the reactions of sulfuric acid as an oxidising agent and as a dehydrating agent. Equipment: * 20mL of concentrated sulfuric acid * 20mL of 2mol/L sulfuric acid * 2 small pieces of each of copper‚ zinc and iron * Sandpaper * 10 test tubes * Test tube rack * 2g of sugar crystals (sucrose) * 2 wooden ice-cream sticks * 10mL measuring cylinders Steps: A: Sulfuric acid
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chloride BeCl2 (e) Potassium iodide KI (f) Aluminum oxide Al2O3 23. Write the correct formula for the following binary molecular compounds. (a) Carbon monoxide CO (b) Boron tribromide BBr3 (c) Sulfur hexafluoride SF6 (d) Carbon dioxide CO2 (e) Carbon tetrabromide CBr4 (f) Nitrogen dioxide NO2 24. Write the correct formulas for the following compounds that contain polyatomic ions. (a) Sodium hydroxide NaOH (b) Potassium nitrate KNO3 (c) Magnesium sulfate MgSO4 (d) Aluminum phosphate
Free Oxygen Oxide Aluminium
accurate balance. Sulfur can be determined gravimetrically. Sulfur is found in minerals such as iron pyrite‚ gypsum and coal. Coal may contain as much as 4% sulfur in various forms: pyritic sulfur (as S 2 2-)‚ sulfur in sulfates (as SO42-) and in a variety of organic forms‚ such as thiophenols and thiophenes. When coal with high sulfur content is burned sulfur dioxide is formed which is a major primary air pollutant. Obviously the value of coal as a fuel decreases as the sulfur content increases
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Silicon dioxide (SiO2) is one of the most common oxides on the surface of earth. Like most oxides‚ it adopts a polymeric structure. Оксидите се хемиски соединенија што содржат најмалку еден атом на кислород и еден атом од друг хемиски елемент во својата формула. An oxide /ˈɒksaɪd/ is a chemical compound that contains at least one oxygenatom and one other element[1] in its chemical formula. Metal oxides typically contain an anion of oxygen in the oxidation state of −2. Most of the Earth’s crustconsists
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Sulfuric Acid IONISATION: Step ONE: Step TWO: HSO4− (aq) + H2O (l) SO42− (aq) + H3O (aq) Production of Sulfuric Acid (CONTACT Process): Sulfur Dioxide Production: sulfur + oxygen sulfur dioxide S (l) + O2 (g) SO2 (g) Sulfur Trioxide Conversion: sulfur dioxide + oxygen sulfur trioxide 2SO2 (g) + O2 (g) 2SO3 (g) Oleum Absorption: sulfur trioxide + sulfuric acid oleum SO3 (g) + H2SO4 (l) H2S2O7 (l) Oleum Dilution: oleum + water sulfuric acid H2S2O7 (l) + H2O (l) 2H2SO4 (l) ELECTROLYSIS
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keep it simple science Ryde Secondary College‚ SL#710371 INDUSTRIAL CHEMISTRY What is this topic about? To keep it as simple as possible‚ (K.I.S.S.) this topic involves the study of: 1. THE CHEMICAL INDUSTRY 2. CHEMICAL EQUILIBRIUM 3. PRODUCTION OF SULFURIC ACID 4. PRODUCTION OF SODIUM HYDROXIDE 5. SOAP & DETERGENTS 6. THE SOLVAY PROCESS FOR Na2CO3 ...all in the context of the applications of Chemistry in human society. 1. THE CHEMICAL INDUSTRY The “Invisible” Industry Most people are familiar
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References: Shepard‚ D. (2008.). The history of fossil fuels. Retrieved from www.ehow.com 12 environmental effects of coal mining. (2011‚ June 14). Retrieved from www.environment911.org Sulfur dioxide. (2012‚ January 06). Retrieved fromhttp://www.epa.gov/air/airtrends/sulfur.html Cities in the early 1800s. (n.d.). Retrieved from http://historycentral.com/NN/America/Cities.html History of mine safety and health legislation. (n.d.). Retrieved
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1. If you were the president of the Win Metal Company‚ what decision would you make regarding this controversy? Explain why. 1. Single supplier Solutions for lack of sulphuric acid: -‘’Sulphric acid is a material used in the production of viscose fibres‚ so in addition to the environmental effect‚ the recovery of sulphric acid will entail considerable savings. WSA plants can eliminate hydrogen sulphide and carbon disulphide contained in the off-gases by converting these sulphur compounds
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Temperature on the Solubility of Carbon Dioxide in Water under Constant Pressure Beijing World Youth Academy Subject: Chemistry Student name: YeiYoung Choo Candidate number: 000791 011 January 21‚ 2009 Teacher Helen Xu The Effect of Temperature on the Solubility of Carbon Dioxide in Water under Constant Pressure (Evaluated for Design) Research Question What is the effect of temperature on the solubility of carbon dioxide gas in de-ionised water under constant
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