Chemical Oxygen Demand (COD)Introduction:The Chemical Oxygen Demand (COD) test is the standard method for measuring the amount of pollution in a sample that is unable to be oxidised biologically.Oxidation takes place on both the organic and inorganic component but as the organic component is more dominant‚ it is of more significant interest.In the COD test‚ the amount of oxidation that takes place depends on sample COD concentration‚ digestion time
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Chemical Reaction:- The transformation of chemical substance into another chemical substance is known as Chemical Reaction. For example: rusting of iron‚ setting of milk into curd‚ digestion of food‚ respiration‚ etc. In chemical reaction new substance is formed which is completely different in properties from the original substance‚ so in a chemical reaction chemical change takes place. Following are the signs of chemical reaction: (a) Change of state of substance. (b) Change of colour of substance
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Carbon and Zinc D. Copper and Tin 5. What acid is found in Vinegar? A. Lactic acid B. Hydrochloric acid C. Ethanoic acid D. Propanoic acid 6. Igneous rocks are also called as A. Fire Rock B. Ice rock C. Coal D. Lime stone 7. The process by which rocks break up to form fragments is called A. Eruption B. Weathering C. Surface run off D. Erosion 8. The word fossil was first used by which scientist A. Nicolaus Steno B. Georgius Agricola C. Alexdenra Flemmings D. Robert Hook
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Chemical Change Lab Name Data Table 1: |Chemicals |Well # |Reaction on White Paper |Reaction on Dark Paper | |NaHCO3 + HCl |A6 |Remains clear. |Remains clear. | |HCl + Blue Dye |B6 |Orange color. |Cannot distinguish color
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COST SHEET – FORMAT |Particulars |Amount |Amount | |Opening Stock of Raw Material | *** | | |Add: Purchase of Raw materials |*** | | |Add: Purchase Expenses
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fires and is a tool that you should carry when you go into the woods. Cerium and the element before‚ lanthanum are both used for dramatic spark effects in movies. They get a big block of it and put it to a grinder. Its atomic number is 58 and its chemical symbol is Ce. The last element I will discuss is neodymium. It is the best known out of the lanthanide series out of rare earths because of the one and only neodymium magnets. They are the strongest magnets in the world and there are many purposes
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Area: Business Permit and Licensing Office Size/Dimension of Area: 181.5 sQm. Location: Municipal City Hall of Bacoor‚ Cavite City (Ground Floor) Area Description: As the name implies‚ this is a place where in Business permits and licenses are dutifully processed. It is located at the ground floor level of the Municipal Hall because it is one of the most visited – therefore‚ one of the busiest – offices in the building‚ hence‚ it was strategically placed on the Ground floor for easy access
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Accumulated Depreciation - Equipment | 51‚950 | Rent Expense | 6‚200 | Electricity Bill – paid on May 30‚ 2011 | 8‚500 | Land | 15‚000 | Depreciation Expense | 31‚750 | | | Required Prepare a fully classified vertical format Balance Sheet for Nguyen Bich Fitness Club as at June 30‚ 2011 EXERCISE 2. The following are account balances of Brickwork as | | | | at 31 December 2010: | | | | | | | | | | | | | | Account | Amount ($) | | | | | | Plant
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SPORTS SHEETS I. Basketball University of Sto. Tomas vs. Far Eastern University UAAP Season 76 Men’s Basketball Smart Araneta Coliseum Yesterday Double-overtime UST- 79 FEU- 78 Key Players: UST: Karim Abdul‚ 24 points‚ Aljon Mariano 21 points and 11 boards‚ Kevin Ferrer‚ 15 points‚ 13 rebounds‚ four assists‚ 2 steals. Team captain jeric teng was not able to play due to pulled hamstring. FEU: Terrence Romeo‚ 19 points‚ 7 of 23 shooting. RR Garcia‚ 16 points. Tigers record improves
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Definition of Physical Education Physical Education is the process by which changes in the individual are bought about through movements’ experiences. Physical Education aims not only at physical development but is also concerned with education of the whole person through physical activities. Allied Fields Health: Health Instruction Health Services Environmental Health Recreation Dance These fields share many purposes with physical education‚ exercise science‚ and sport‚ but the content of the
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