Toggle Sidebar Find Previous NextPage: of 5 Tools Zoom Out Zoom InAutomatic ZoomActual SizeFit PageFull Width50%75%100%125%150%200% 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
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The Ecosystem of the Florida Everglades The Florida Everglades is a vast wetland ecosystem made up of marshes and swamps. This ecosystem begins at Lake Okeechobee‚ a large lake in central Florida‚ and ends in the Gulf of Mexico and Florida Bay. It is nearly 50 miles across and 110 miles long and contains mile after mile of shallow water flowing through thick mats of
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Standard Methods for the Examination of Water and Wastewater 5210 BIOCHEMICAL OXYGEN DEMAND (BOD)*#(1) 5220 CHEMICAL OXYGEN DEMAND (COD)*#(2) 5220 A. Introduction Chemical oxygen demand (COD) is defined as the amount of a specified oxidant that reacts with the sample under controlled conditions. The quantity of oxidant consumed is expressed in terms of its oxygen equivalence. Because of its unique chemical properties‚ the dichromate ion (Cr2O72–) is the specified oxidant in Methods
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3/5/2011 EXPERIMENT EXPERIMENT 8 OBJECTIVES CONCEPTS REAGENTS PROCEDURE RESULTS DISCUSSION IR ANALYSIS 8 Objectives to differentiate various types of oxygen-bearing organic compounds to device a scheme to distinguish each functional group Analysis of Oxygen-bearing Organic Compounds alanx3@yahoo.com OBJECTIVES CONCEPTS REAGENTS PROCEDURE RESULTS DISCUSSION IR ANALYSIS to characterize an unknown sample through parallel chemical tests ARMSALCEDO ARMSALCEDO alanx3@yahoo
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Introduction: Photosynthesis is a process to which some autotrophs such as plants produce their own food. It has two stages or reactions light-dependent and light-dependent reactions. The light dependent reactions are the first stage‚ where energy from sunlight is captures in Photosystem 2 and then 1‚ the electrons generated in Photosystem 1 then moves along the electron transport chain. The moving of electrons causes a hydrogen ion gradient that is used in the final step to produce ATP‚ by the
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A Balanced Ecosystem - An Aquarium The term ecosystem describes both the living and non-living components of an area that interact with one another. All the components are inter-dependant in some way with each other. An ecosystem may be aquatic or terrestrial. In an aquatic ecosystem rocks are needed for shelter and plants provide oxygen for fish. An ecosystem is balanced when the natural animals and plants and non-living components are in harmony- i.e. there is nothing to disturb the balance.
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INTERPRETATION | POSITIVE TEST | Iodine/Potassium Iodide solution changed from brown to blue- black | Starch is present | NEGATIVE TEST | No colour change | Starch is not present | DISCUSSION QUESTIONS AND ANSWERS 1. Describe Photosynthesis. Use a symbol equation. Photosynthesis is the process
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PHOTOSYNTHESIS (How do the light dependent and light independent reactions provide food for a plant?) Why? How important are plants to life on Earth? Could life as we know it continue if there were no plants? Read on the find out why plants are truly the cornerstone of life. Model 1: An Overview of Photosynthesis and Chloroplast Structure 6CO2 + 6H2O C6H12O6 + 6O2 Site of the Calvin cycle‚ or light independent reactions 6 H 2O + 6 CO2 Contains chlorophyll. This is the site of the light dependent
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Colonisation and Succession in an Ecosystem 1. Ecosystem is a community of organisms which interact with their non-living environment and function as a unit. 2. Habitat is a natural environment where organisms live. Also provide shelter‚ food‚ living space‚ nesting sites and mates. 3. Species is a group of organisms that look alike and have similar characteristics‚ share the same roles in an ecosystem and are capable of interbreeding to produce fertile offspring. 4. Population is
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of Sugars on Yeast Respiration Introduction Cellular respiration can be defined as the release of energy‚ or the breakdown of carbohydrates into carbon dioxide and water1. Cell respiration takes place in the mitochondria of animals and in the cytoplasm of plants. The formula for aerobic cellular respiration is: c6H12O6+ 6O2→6CO2+6H2O Aerobic respiration occurs when oxygen is present‚ while anaerobic respiration occurs when there is no oxygen present. In anaerobic respiration‚ ethanol and carbon
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