when the solute atoms take up positions of solvent atoms in the crystal lattice. If the two metal atoms are about the same size and have the same crystallographic structure‚ then the two metals may form a solid solution. Brass‚ an alloy composed of copper and zinc‚ is an example of a substitutional alloy. Alloys have different applications depending on their properties. The various types of steel and iron are all alloys classifiable by their content of other materials. For instance‚ wrought iron has
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solutions. The aqueous nitrates are copper (II) nitrate‚ lead (II) nitrate‚ zinc nitrate‚ magnesium nitrate‚ and silver nitrate. You can not manufacture the containers from glass due to possible breakage. Nor will plastic containers do because plastic tends to harden over time and also may shatter. This leaves metal. Unfortunately‚ many metals get eaten away (corrode)‚ when they come in contact with aqueous nitrates. Company documents indicate that copper‚ lead‚ zinc‚ and magnesium metals
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chopped his body up. The ghost told Pedro that he buried the three bags of coins by a tree in his courtyard. They went out and Pedro started digging. He found the first bag‚ a bag of silver coins‚ next‚ a bag of copper‚ then lastly‚ a bag of gold coins. The ghost told Pedro to give the copper to
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of anhydrous copper sulfate (CuSO4) is white because it reflects lights in visible region of spectrum. Once water is added‚ it changes to blue as the structure of the copper transitional compound becomes Cu(H2O)4 SO4 - H2O where four water molecules are bound to the copper ion and the fifth is a water of crystallization. This compound absorbs light of wavelengths from 600 to 800nm (yellow-to-red region) light and blue light is transmitted. When ammonia is added to a solution of copper(II) cation‚
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Progress in Organic Coatings 50 (2004) 75–104 Review Antifouling technology—past‚ present and future steps towards efficient and environmentally friendly antifouling coatings Diego Meseguer Yebra‚ Søren Kiil∗ ‚ Kim Dam-Johansen Department of Chemical Engineering‚ Technical University of Denmark‚ Building 229‚ DK-2800 Kgs. Lyngby‚ Denmark Received 28 January 2003; accepted 15 June 2003 Abstract The imminent ban of environmentally harmful tributyltin (TBT)-based paint products has been the
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ELECTROPLATING Electroplating is the application of electrolytic cells in which a thin layer of metal is deposited onto an electrically conductive surface. Electroplating is a plating process that uses electrical current to reduce cat ions of a desired material from a solution and coat a conductive object with a thin layer of the material‚ such as a metal. Electroplating is primarily used for depositing a layer of material to bestow a desired property (e.g.‚ abrasion and wear resistance‚ corrosion
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is the major producer of copper concentrates. It was the oldest mining company‚ the largest gold and chromite producer and one of the largest copper producers in the Philippines. Smelted Weaknesses Benguet Corporation production was expected to decline steadily which results a negative impact to Mitsubishi Metal Corporation. The Letter of Instruction (LOI) ensures the Philippine Associated Smelting and Refining Corporation (PASAR) an adequate supply of copper concentrates from all local
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SOLIDS: Mass‚ Volume and Density Measurements A. Overview Review Sections 1.4 - 1.6 in your textbook (Chemistry: The Central Science‚ 9th Ed. ‚ Brown‚ LeMay‚ Bursten‚ & Burdge) This experiment will introduce you to a very important concept in science‚ especially chemistry: DENSITY. Density is the relationship between the mass of an object and the volume which it occupies. Solid substances generally have the greatest density‚ normally in the range of 1 - 25 g/cm3. Most liquids have densities between
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Episode 112: Resistivity In this episode‚ students learn how and why the resistance of a wire depends on the wire’s dimensions. They learn the definition of resistivity and use it in calculations. Summary Discussion: Variation of resistance with length and area. (5 minutes) Student experiment: Variation of resistance with length and area. (30 minutes) Discussion: Variation of resistance with length and area. (10 minutes) Student experiment: Measurement of resistivity. (30 minutes) Student
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Mixing of two solutions. 55 Class IX EXPERIMENT No: 9 AIM: To study the external features of root‚ stem‚ leaf and flower of monocot and dicot plants. Material Required : Plants of Hibiscus/Peturnia/rose/pea and grass/maize/bamboo/lily or‚ any other ornamental herb with flower and fruits‚ simple or dissecting microscope‚ hand lens‚ slide‚ coverslip and razor /blade. Procedure : 1. 2. 3. Observe the differences in the external features of stem‚ leaf‚ root‚ flowers and seeds. To study the leaf‚ see
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