1 (a) In this apparatus hydrochloric acid is decomposed by passing a direct electric current through it. Chlorine and hydrogen are formed. (i) Give the name of this process in which substances‚ such as hydrochloric acid‚ are decomposed by a direct electric current. (1) electrolysis (ii) Describe what happens when a burning splint is applied to a mixture of hydrogen and air in a test tube. (2) (b) (i) Complete the sentence by putting a cross ( ) in the box next to your answer. An acid
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residual elements were either present within the raw materials used in the production process e.g. iron ore and scrap steel additions‚ or they were added in the production process for a specific purpose‚ e.g. deoxidization by means of silicon or aluminium. Hence they are called residual elements to distinguish them from alloying elements that are deliberately added according to specified minimum amounts. The term “cleanliness” refers to the amounts of various phases such as oxides‚ sulphides and silicates
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Organisational Behaviour. The Volta Aluminium Company Limited (VALCO) is an aluminium reduction facility (smelter) located in the industrial seaport city of Tema‚ east of the capital city of Accra. VALCO was originally jointly owned by Kaiser Aluminium and Chemical Corporation (KACC) - 90% and Reynolds Metals Company .The Government of Ghana purchased the 90% shares of KACC in October 2004 and subsequently completed acquisition in June 2008. Therefore‚ currently VALCO is solely owned by the
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the casting. When doing this all vertical edges must be tapered as to make it easier to lift the pattern out of the mould. - Contraction allowances have to be added to the pattern because it shrinks in size in all dimensions. In this case it’s Aluminium‚ which has a contraction allowance of 1.3%. - Machining allowance: Castings are usually machined so that they fit perfectly with mating components. So therefore extra material should be added for machining. This can range from 1 - 35mm. - The pattern
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PREFACE The report has been intended to reflect some of the basic issues covered under the “Working Capital Management” of Hindalco Industries Ltd.‚ a first truly MNC in India. All the aspects have been formulated and presented on the basis of the ideas and information gathered by the investigator during the span of project training. This gives a practical exposure of the content under topic‚ what has already been studied in classroom in theoretical form. This report has been written
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uk/schools/gcsebitesize/science/add_aqa_pre_2011/atomic/differentsubrev5.shtml Brooks‚ W Clark‚ J. (2005). Copper. Retrieved from Chem Guide: http://www.chemguide.co.uk/inorganic/extraction/copper.html Creamer‚ K Davyson‚ S. (2002). Aluminium. Retrieved from Aluminium: http://sam.davyson.com/as/physics/aluminium/site/ Macmillan Mazur‚ L. (2007). Chemical Elements. Retrieved March 19‚ 2013‚ from Chemistry Explained: http://www.chemistryexplained.com/elements/C-K/Gold.html Prices‚ C TMS‚ A. (2013). Bir Umm Fawakhir: Insights
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1. INTRODUCTION SilCote aluminum pigment is manufactured by mixing aluminum paste with Monomer‚ SR-350 (trimethylolpropane trimethancrylate) and additive‚ Z-6040 which is an epoxy-functional Silane (3-glycidoxypropyl trimethoxy silane)‚ in a jacketed mixer with the presence of catalyst‚ ABIN (azo-bis-isobutyronitrile). White spirit‚ acts as the carrier solvent in the process. 2. PROCESS FLOW The aluminum paste is first loaded into the jacketed mixer‚ followed by introducing a pre-determined
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Wikipedia‚ the free encyclopedia Monument of laterite brickstones at Angadipuram‚ Kerala‚ India‚ which commemorates where laterite was first described and discussed by Dr. Buchanan-Hamilton in 1807. Laterites are soil types rich in iron and aluminium‚ formed in hot and wet tropical areas. Nearly all laterites are rusty-red because of iron oxides. They develop by intensive and long-lasting weathering of the underlying parent rock. Tropical weathering (laterization) is a prolonged process of chemical
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mechanisms for the strengthening of metal alloys. It influences some properties of the alloys such as strength‚ hardness and ductility. The purpose of this experiment was to test the effect of temperature and aging time on strength and hardness of 6060 aluminium alloy samples that have roughly similar compositions by subjecting them to different temperatures for different periods of time. The experiment showed that the strength and hardness of the samples increased when they were allowed to age for longer
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EXTRACTION OF COPPER FROM OXIDISED COPPER ORE Aim: To analyse how copper is obtained from oxidised copper ore using the processes of leaching‚ solid-liquid separation‚ displacing and electrowinning. Method: Refer to ‘Extraction of Copper from oxidised Copper Ore’ document pages 1-2 Results: Leaching: The blue particles in the copper ore which is copper was dissolved in the sulphuric acid and the solution turned into a blue colour. There was also sediment that was floating around
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