EXPERIMENT 1: Aim: To range the metals copper‚ lead‚ silver and zinc together with hydrogen. Start with the strongest reducing agent. Hypothesis: The nobler a metal is‚ the worse reducing agent. Apparatus/requirements: Sandpaper‚ strips of; zinc‚ lead‚ silver and copper‚ solutions containing aqueous; Zn2+‚ Pb2+‚ Cu2+ and Ag+ ions (0.2 M)‚ hydrochloric acid (5.0 M)‚ emery paper‚ test-tubes. Method: Burnish the three metal strips to get a shiny surface‚ after drop a drop of each of the metal
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What would happen without animal testing? Imagine a world where everybody is sick. Thats what will happen without animal testing‚ where humans would experiment on each other to keep us “safe”. Medical testing on animals is good for these reasons: it helps in the development in medicine‚ finding and curing new diseases‚ and keeping humans from dying from the new drugs that have defects. Medicine Medicine is a necessity for human life in the current generation with all the current and new diseases
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Report on Zinc deficiencies Zinc deficiency is the inadequate amount of zinc in the body to meet its demands. Zinc is vital to the body functions such as‚ a healthy immune system and wrongdiagnosis.com states is best known for minimizing the effects of the common cold or upper respiratory infections. It can enhance the functions of the liver‚ muscles and bones. Other functions of zinc in the body are to wound heals; aid enzyme activity; DNA production and cell division. When there is an insufficient
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Hindustan Zinc Limited (HZL) (NSE: HINDZINC‚ BSE: 500188) is an integrated mining and resources producer of zinc‚ lead‚ silver and cadmium. It is a subsidiary of Vedanta Resources PLC. HZL is the world’s second largest zinc producer. It’s FY2011 revenues were Rs. 108.91 billion.[2] Contents [hide] • 1 History • 2 Operations o 2.1 Mining o 2.2 Smelting • 3 References [edit]History Hindustan Zinc Limited was incorporated from the erstwhile Metal Corporation of India on 10 January 1966
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The Dumbest Generation “Give a man a fish and you feed him for a day; teach a man to fish and you feed him for a lifetime.” - Maimonides. Over the past years‚ our world has been creating and inventing new ways to obtain information. The under thirty year generation has the most exposure to these new technological advances‚ but how come studies show that I.Q scores keep going down year by year? The under thirty generation is the dumbest generation because materials we are given are misused as a
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Paani gaye na ubre Moti manus‚ choon …….” [ Says Rahim‚ keep water‚ as without water there is nothing. Without water pearl‚ swan and dove cannot exist] These lines were written by the poet Abdur Rahim Khankhana ‚ one of the nine gems of Akbar’s court. What kind of resources is the poet referring to? Write in about 600
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The stolen generation was a shameful period in Australia’s history. They‚ the stolen generation‚ were a large amount of aborigines called half-castes that were taken away from their family if they were part non-indigenous. These half-castes would have been taken away without any notice‚ then brought to an orphanage like place‚ where the girls would have been trained to become a domestic servant and the boys would be trained to become stockmen. The plan for the stolen generation was to breed aboriginal
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Leaving the euro: A practical guide 4 June 2012 A revised submission for the Wolfson Economics Prize MMXII by Capital Economics Lead author: Roger Bootle Capital Economics Limited‚ 150 Buckingham Palace Road‚ London. SW1W 9TR Telephone. +44 (0)20 7823 5000 e-mail: roger.bootle@capitaleconomics.com Registered Office: As above. Registered in England No. 2484735 VAT No. GB 713 8940 25 Leaving the euro: A practical guide CONTENTS 1 Introduction ............................
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"To See What Factors Affect The Decomposition Of Hydrogen Peroxide By The Enzyme Catalase Which Is Found In The Liver" Introduction: Enzymes are biological catalysts. They speed up the chemical reactions which go on inside living things. Without them the reactions would be so slow that life would grind to a halt. Enzymes work by when a substrate molecule bumps into a molecule of the right enzyme‚ it fits into a depression on the surface of the enzyme molecule. This depression is called the
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Undoped and Ce doped ZnO thin films were prepared by the sol-gel process. Zinc acetate dehydrate was dissolved in a mixture of absolute ethanol and monoethanolamine (MEA) yielding to a precursor concentration of 0.4 M .The MEA to zinc acetate molar ratio was set to 1. For doped films‚ cerium nitrate was added to the mixture with an atomic percentage fixed at 0.1‚ 0.3‚ 0.5‚ 0.7‚ and 0.9 at.% Ce‚ respectively. The resulting sols were magnetically stirred at 60°C for 1 hour and then aged at room temperature
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