DISSOLVED OXYGEN BY WINKLER TITRATION 1. Background Knowledge of the dissolved oxygen (O2) concentration in seawater is often necessary in environmental and marine science. It may be used by physical oceanographers to study water masses in the ocean. It provides the marine biologist with a means of measuring primary production - particularly in laboratory cultures. For the marine chemist‚ it provides a measure of the redox potential of the water column. The concentration of dissolved oxygen can be readily
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H2O + 36 or 38 ATP Through determining the rate of oxygen consumption‚ the rate of respiration can be determined. In this experiment‚ all carbon dioxide produced through respiration combines with KOH in the following reaction: CO2 + 2KOH K2CO3 + H2O Carbon dioxide is removed when it combines with potassium hydroxide. This creates a change in volume of the gas in the respirometer. Because the amount of oxygen consumed and carbon dioxide produced have the same molar ratio (6:6)‚ the rate of
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Laboratory 2: Measurement of Biochemical Oxygen Demand (BOD) Objective To determine the amount of oxygen necessary for biological oxidation of wastewater effluent and determine the amount of oxygen required by bacteria while stabilizing decomposable organic matter. Methodology Apparatus ; Biochemical Oxygen Demand (BOD) meter‚ Dissolved Oxygen bottle (DO bottle)‚ pipette‚ Teflon tape‚ dilution water‚ incubator machine. Procedure; Add 300 ml dilute water then take DO reading immediately Closed properly
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Andrographis paniculata is a herbaceous plant in the family Acanthaceae‚ native to India and Sri Lanka. It is widely cultivated in southern Asia‚ where it is used to treat infections and some diseases‚ often being used before antibiotics were created. Mostly the leaves and roots were used for medicinal purposes. | | edit]Etymology Andrographis paniculata is an erect annual herb extremely bitter in taste in each and every part of the plant body. The plant is known in north-eastern India as
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Carbon‚ Phosphorus‚ and Nitrogen Cycles By: Amy Gentry There are three importation cycles that the environment. The three cycles are carbon‚ phosphorus and nitrogen cycles. These cycles are part of photosynthesis. These are a chain that keeps everything going in the word. These cycles keep animal alive and plants and people breathing. Carbon cycle is an Importation one of the cycle on earth. You get carbon atoms from co2 then become carbon atoms of the organic molecules are making up the plant
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Greenhouse gases are the cause of global climate change. The main greenhouse gasses are water vapor‚ carbon dioxide‚ methane‚ nitrous oxide‚ and chlorofluorocarbons. Although most of these gases are natural‚ they are all being put into the air at a much more dangerous rate than normal. Water vapor‚ the greatest natural contributor to global warming‚ and lasts about nine days in the atmosphere. Water vapor is in the atmosphere more recently‚ because there has been more water that has evaporated because
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Abstract: The chemical and physical conditions used in the preparation of activated carbon‚ an adsorbent used in water filtration influence the specific surface area and the porosity. In this study‚ coconut shell was used as the raw material and activation reagents such as Hydrochloric acid‚ Zinc Chloride and Phosphoric Acid were used. A single burn and double burn process was carried out for each method. The activated carbon obtained was compared in terms of absorption capacity‚ bulk density‚ BET specific
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As we acquire more knowledge‚ things do not become more comprehensible‚ but more complex and mysterious. As we tend to know more about something we tend to take things to another level. This could be challenging for some and for some it may be the thing they were looking for. I agree to an extent that as we acquire more knowledge‚ things do not become more comprehensible‚ but more complex and mysterious. However‚ it highly depends from person to person‚ the type of knowledge we acquire and lastly
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(Figure 1). For the next test‚ Dissolved Oxygen‚ we also created a bar graph to compare the values for the control and experimental groups. These results came in as statistically significant too‚ as the p-value was very low at .004. As for the overall mean values of the two groups‚ we found that the control group was oversaturated with oxygen at 102.78% while the experimental group was also slightly oversaturated at 101.55%.
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DESIGN AND CONSTRUCTION OF A BIOGAS PLANT BY SADIQ SANUSI UMAR SCI/05/PHY/04045 A final year Project submitted to The Department of Physics‚ Faculty of Science‚ Bayero University Kano. NOVEMBER 2009. ACKNOWLEDGEMENT Verily‚ all praise is due to Allah‚ the eternally besought of all‚ the most conclusive of all judges. Glory is unto Him whose aid and forgiveness we seek. May Allah extol and send blessings of peace upon His Slave and Messenger‚ the best of His creation‚ and the faithful
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