your memory. Support your memory with understanding. Statement 1: Al2O3 and SiO2 are insoluble in water. SiO2 is soluble only in hot concentrated NaOH. Element A is Si. Statement 2: Al2O3 is an amphoteric oxide. B is Al. Statement 3: C is a non-metal and it forms an acidic oxide that can react with alkali. C could be P, S or Cl. Statement 4: D is Na. Na2O dissolves in water to form a strong alkaline solution of NaOH. It cannot be MgO because MgO can only form a weak alkaline solution. Sequence:
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ADSORPTION PROPERTIES OF ANTHRANILIC ACID CONTAINING POLYMERIC RESINS FOR SEPARATION OF METAL IONS Pathik Shah*, Pradeep Upadhyaya. Central Institute of Plastics Engineering & Technology (CIPET), Ahmedabad pathikas@gmail.com SYNTHESIS OF RESIN BY MICROWAVE IRRADIATION In the first step, Anthranilic acid (0.1 mol) was taken in a 250 mL threenecked round bottom fitted with a stirrer, a thermometer and a condenser and was dissolved in DMF solvent (20 mL). To that formaldehyde (0.3 mol as
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Stents with Nickel Titanium are non-Ferrous. This is because titanium and nickel and titanium have no iron 1310 °C. This is a metal alloy as it is made up of Nickel and Titanium. This metal is shown as a shiny, bright, silver metal. The metal can elasticise and can re shape itself to its original shape. Nickel titanium has many uses as it is used in most medical areas.NiTi is used in dentistry when braces are put on a person’s teeth because its flexibility allows it to straighten teeth. Urea
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Literature Review Background on Lead Lead is a naturally occurring metal found in small amounts (0.002%) throughout the earth’s surface and deep beneath the ground (National Institute of Environmental Health Sciences, 2014; Environmental Protection Agency, 2014; World Health Organization, 2010). It is described as a heavy, low melting, and bluish-gray metal (Agency for Toxic Substances & Disease Registry, 2007). The toxicity of lead has been known ever since Roman times (WHO, 2010), when a Greek
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Corrosion is an unavoidable problem that occurs almost everywhere. It can happen when a solid interacts with its environment. Corrosion oxidises metals back to some natural ore. Despite not all corrosion is unwanted, corrosion has become a growing economic concern. Taking an example of what happens in USA, corrosion of metals costs the economy almost $300 billion per year at current prices, which translates to 3-4% of GDP. Besides the economic concern, corrosion may adversely affect the environment
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Quality Metal Service Centre lies in the metal distribution industry which is highly competitive and mature. There are fewer companies in this field than those in the retail business or service industry. Quality Metal Service Centre is in the middle of the value chain. They have two major responsibility areas, both internal and external. One issue identified with QSMC is that they have few suppliers to choose from as there only a certain number of metal mills available. With their corporate strategy
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in a culture that values art and beauty and eternity. The Egyptians had a mind to build things that lasted. I believe I would have observed in awe, the building of the pyramids. The Egyptians were accomplished metal workers, judging by the ornate craftsmanship in working precious metals. I would imagine it was an exciting time as the priests interpreted the stars at night and informed the farmers when to plant and when to harvest their crops. The society would be learning the value of natural
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ABDUL RAHMAN Class : M11J Research Question : How does the reaction between Zinc metal and 0.1M of Hydrochloric Acid using different sizes of Zinc metal (Powdered Zinc, Shredded Zinc strip and Zinc strips) can affect the volume of Hydrogen gas produced at the end of the experiment (after 10 minutes) under same temperature which is room temperature? Variables : Manipulated : Different sizes of Zinc Metal Responding : Volume of Hydrogen Gas produced after 10 minutes. Constant : Constant
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Quality Metal Service Center Case Analysis Company History Quality Metal Service Center was established in the late 1800s as a local metals distribution center. By 1992, it had grown into a national metal distribution company operating in four geographic regions-each of which contained about six districts. The company had experienced rapid sales growth along with the geographic expansion since the 1920s. In 1991, Quality Metal posted sales in excess of $750 million. In March, 1992, the
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Case 7-3 Quality Metal Service Center In early March 1992, Edward Brown was President and CEO of Quality Metal Service Centers with the following comment: Although I am satisfied with the company's past performance, I believe that we have the ability to increase sales and profitability. Given the expansion of the market and competitive position, it is my feeling that we have missed certain opportunities to grow. I do not know if our government system has been to discourage managers to adhere to the
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