EXPERIMENT 11: DETERMINATION OF DISSOLVED OXYGEN IN A WATER SAMPLE (WINKLER METHOD) INTRODUCTION In an alkaline solution‚ dissolved oxygen will oxidize manganese(II) to the trivalent state. 8OH-(aq) + 4Mn2+(aq) + 2H2O(l) －－＞ 4Mn(OH)3(s) The analysis is completed by titrating the iodine produced from potassium iodide by manganese(III) hydroxide. 2Mn(OH)3(s) + 2I-(aq) + 6 H+(aq) －－＞ 2Mn2+(aq) + I2(aq) + 6H2O(l) Sodium thiosulphate is used as the titrant. Success of the method is critically
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The Effects of Population Density Psy 460 September 29‚ 2011 The Effects of Population Density Population density indicates the population that lives in an area by unit of territorial surface of that zone. Allows us to distinguish which are the areas where there’s a high or a low number of people be contingent of the territory they occupy. This essay will discuss the effect of population density and noise on individuals. In addition there’s a brief description of the
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which contains about 13% of the world’s population and supports high urban densities due to its strong manufacturing base. The final cluster is North-eastern USA/southern Canada‚ which has a rich agricultural base and natural resources of coal iron ore‚ natural gas and oil. Population densities within these regions are over 50 people/km2. There are also fourteen smaller clusters of population with population densities of 10-50 people/km2. Included in this group are eastern Australia‚ the islands
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PRICE DETERMINATION IN A COMPETITIVE MARKET METHOD AND PROBLEM A CASE STUDY OF CONSOLIDATED BREWERIES PLC BY OTTAH SAMUEL O. MATRIC NO: 201042000097 DEPARTMENT OF BUSINESS ADMINISTRATION AND MANAGEMENT. OGUN STATE INSTITUTE OF TECHNOLOGY IGBESA‚ OGUN STATE IN PARTIAL FULFILMENT OF THE REQUIREMENT FOR THE AWARD OF NATIONAL DIPLOMA IN BUSINESS ADMINISTRATION AND MANAGEMENT CERTIFICATION This is to certify that this research work was carried out by OTTAH SAMUEL O. with matric number 2010042000097
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of birds‚ fish and mammals‚ but also a political battleground that is used to ignite the debate on America’s dependence on foreign fuel sources. The possibility of drilling for oil in ANWR brings with it the promise of jobs‚ dependency from unstable countries for our fuel needs and a boost to our declining economy. However‚ drilling in this land also brings the possibility of destroying the habitat of birds that migrate to this area yearly‚ caribou that use this haven as a calving ground‚ fish that
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1. DATA: Table 1: Density based on dimensional analysis Trial 1 Trial 2 Trial 3 Units Mass of sample 70.5466 70.5467 70.5465 g Dimensions of sample Length 4.98 4.98 4.99 cm Width 1.21 1.22 1.21 cm Height 1.21 1.22 1.22 cm Volum of sample 7.29 7.41 7.37 cm^3 Density of sample (based on dimensional analysis) 9.68 9.52 9.57 g/cm^3 Table 2: Density based on the displacement of water Trial 1 Trial 2 Trial 3 Units Mass of sample 70.5467 70.5465 70.5466 g Final
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Performance Task no. 4.1 Pressure Principle I. Introduction Why is theater seat so much more comfortable than a bicycle seat? One of the main reasons any seat is comfortable is the pressure it exerts on your body. This performance task aims to know the importance and application of pressure. Pressure is defined as the force acting perpendicular to a unit area. It is the result of a force distributed over an area. A theater seat’s large padded seat and back offer a larger area to support your
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In the case of oil drilling we have three sides: drilling in land only‚ expanding to drilling off shore‚ and then there is those that say we should slowly stop oil drilling and move to renewable resources such as wind power. Oil drilling is just the extraction of oil from the earth but doing so there are possibilities of catastrophes. Disruption of wildlife migration routes and
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Offshore Drilling." New York Times. 30 Aug. 2010. Web. 27 Oct. 2014. Goldenberg‚ Suzanne. "The Oil Industry Is Unprepared to Handle Spills in the Arctic. “Oil Spills. Ed. Tamara Thompson. Farmington Hills‚ MI: Greenhaven Press‚ 2014. Current Controversies. Rpt. from "Arctic Oil Spill Clean-up Plans Are ’Thoroughly Inadequate ’‚ Industry Warned." Guardian 11 Nov. 2010. Opposing Viewpoints in Context. Web. 21 Oct. 2014. Howell‚ Kate‚ and Patrick Reis. "Interior Issues New Offshore Drilling Rules‚ Holds
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The Effects of Population Density PSY/460 April 7‚ 2014 The Effects of Population Density You can find noise and pollution in nearly all major cities. Noise in general can be a serious
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