Chromite‚ Platinum‚ Gravel‚ Silver‚ Nickel‚ Iron‚ Marble‚ Sulfur 2. Describe the characteristic features of each minerals. Gold- soft‚ lustrous yellow‚ malleable metal. It is one of the transition metals. It is highly sought after precious metal in jewelry Copper- is valued for strength‚ malleability‚ ductility‚ and ability to conduct electricity and heat. It is also non-magnetic‚ resists wear‚ and forms a green patina which makes it resistant to corrosion. Chromite-is the most important ore of
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Chapter 3 Centrifugation Biochemistry and Molecular Biology (BMB) 3.1 Introduction 3.2 Basic Principle of sedimentation 3.3 Types‚ care and safety of centrifuges 3.4 Preparative centrifugation 3.5 Analytical centrifugation Analytical Biochemistry (AB) 3.4.3 Ultracentrifugation Koolman‚ Color Atlas of Biochemistry‚ 2nd edition 1 General Steps in Biochemical Separation 2 Separation of Macromolecules Chromatography‚ precipitation Electrophoresis‚ ultracentrifugation 3
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Chapter 1 Chemical Reactions and Equations Q.1. Why should magnesium ribbon be cleaned before burning in air ? Ans: Magnesium ribbon is a very reactive metal. When stored it reacts with oxygen to form a layer of magnesium oxide on its surface. This layer of magnesium oxide being a stable compound prevents further reaction of magnesium with oxygen. The magnesium is cleaned before burning in air to remove this layer so that the metal can be exposed to air properly. Q.2. Write the balanced
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Doha west power Generation and Water Distillation Station is one of the main base load plants of the country governed by the ministry of electricity and water‚ government of Kuwait. This power station is situated in Doha‚ located approx. 15 km to the west of Kuwait city. This power station is composed of eight power generating units of 300 M.W. capacity each and 16 water distillation units of 6/6.2 million imperial gallons per day capacity each. In all‚ power station is capable of generating 2400
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oyster shells and commercial ones to dry. * Compare the time it takes for the sealants to dry under the sun and at the room temperature. * Test the effectiveness of oyster shells as an additive in preparing sealants in terms of corrosion‚ resistance‚ insolubility and strength. 1.3 Significance of the Study The
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dissolved gases from the feedwater to steam-generating boilers. In particular‚ dissolved oxygen in boiler feedwaters will cause serious corrosion damage in steam systems by attaching to the walls of metal piping and other metallic equipment and forming oxides (rust). Dissolved carbon dioxide combines with water to form carbonic acid that causes further corrosion. Most deaerators are designed to remove oxygen down to levels of 7 ppb by weight (0.005 cm³/L) or less as well as essentially eliminating
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WOODS Is organic and will decay over time. In wetter conditions with decay will be quicker. It is also subject to conditions such as dry rot‚ or pests. The greater the density of wood‚ the greater its mechanical strength. Knots also contained‚ formed where branches grew from main trunk‚ or where a bud was formed. Can generate weaknesses‚ or be aesthetic. HARDWOODS o o Deciduous (leaf-losing) trees. Slower growing‚ making them denser. Some take up to 100 years to reach full maturity
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Origins of the Name The word‚ Aluminium originates from the ancient Latin word for alum‚ alumen‚ which is potassium aluminum sulfate‚ meaning “bitter salt”. We pronounce the element of aluminium’s name as follows‚ al-yuh-min-ee-uhm‚ which conforms to the IUPAC pronunciation of the word‚ with the regular ‘ium’ ending of majority of the elements of the periodic table. The History Aluminium was first discovered in 1825‚ by early discoverer‚ Hans Christian Oersted in Denmark. Before this time‚ alum
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chemical attack at temperatures below 150 C. Tantalum is virtually resistant to corrosion due to an oxide film on its surface. Applications Tantalum finds use in four areas: high-temperature applications‚ such as aircraft engines; electrical devices‚ such as capacitors; sirurgical impants and handling corrosive chemicals. It is rarely used as an alloying agent because it tends to make metals brittle. Tantalum resist corrosion and is almost impervious to chemical attack‚ for this reason it has been employed
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Research Task: Metals By Megan Forbes 1. Gold Figure 1 Evidence of gold mines: Ancient Egyptian map showing roads to Nubian gold mines‚ dated 1400-1200 BC (Located in the Egyptian Museum in Turin‚ Italy) Figure 1 Evidence of gold mines: Ancient Egyptian map showing roads to Nubian gold mines‚ dated 1400-1200 BC (Located in the Egyptian Museum in Turin‚ Italy) Figure 2 Ancient Egyptian hieroglyphs depicting gold Figure 2 Ancient Egyptian hieroglyphs depicting gold i) Gold was no
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