Nitrite-Nitrogen in Drinking Water Nitrate may be naturally occurring‚ although its presence in drinking water is more often associated with contamination by excessive use of fertilizers (both inorganic and organic)‚ in addition to inappropriate farming practices and sewage. The high nitrate level in drinking water is also associated with the simultaneous presence of bacterial contamination (World Health Organisation‚ 1996). The primary health hazard from drinking water with nitrate-nitrogen occurs
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this case‚ the yeast. We then proceeded to measure and add 1 mL of distilled water to test tubes A-D. To get a more accurate measure of 1 mL of distilled water‚ we used the dropper labeled “W” to drop distilled water into the 5 mL graduated cylinder until we saw that the bottom of the water line reached closely to 1 mL. Next‚ we took the four tubes with the scoop of yeast and added to each the corresponding 1 mL of water from tubes A-D. As soon as each tube had the 1 mL of water we put the timer
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calculate the fraction that will be used up after 6.0 minutes. 4. [15 points] The rate law for the decomposition of ozone to molecular oxygen 3 O3 (g) −→ 3 O2 (g) is rate = k [O3 ]2 . [O2 ] The mechanism for this process is k1 O3 O + O2 k−1 k 2 O + O3 −→ 2 O2 Derive a rate law from these elementary steps. Clearly state the assumptions you use in the derivation. Explain why the rate decreases with increasing O2 concentration. 5. [15 points] Consider the following
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What is Alkaline Water? Alkaline water‚ also commonly known as ionized water‚ is water that has a pH level greater than seven. This water is generally produced with the aid of a faucet-based water ionizer‚ or "alkalizer" and features a number of health benefits. Making Alkaline Water These are some of the possible sources of alkaline water: * Lemon (& Lime) Water * pH Drops * Alkalising Powder * Mainstream Water Filters * Water Distillers * Reverse Osmosis * Alkaline
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us and the environment. We used Nutrient Agar which is a growth medium used to culture microorganisms or small plants and Sabourand Dextrose Agar plates used to cultivate moulds and yeasts. The objective of it was to demonstrate that microbes are everywhere. We expected to find a variety of bacteria‚ moulds and yeasts. We were introduced to aseptic techniques as they help ensure that only certain microorganisms are present in the plate. These methods also guarantee that microorganisms do not escape
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All children are unique and develop at their own rate but they tend to follow a similar pattern. There are a number of areas of development like‚ Physical‚ communication‚ Social‚ emotional‚ behavioural‚ Intellectual and moral development. Development is very rapid in the early years of a child’s life and tends to slow down the older they get. Moral development is usually adapted from the setting a child lives and would usually deem something wrong and right‚ based on what their parents believe is
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concentration on yeast activity Introduction: Yeasts are eukaryotic micro organisms belonging to the kingdom fungi. Yeasts live on sugars and produce ethanol and carbon dioxide as by-products. [James Mallory‚ 1984]When Yeasts are given water and sucrose they convert the sucrose into glucose then convert the glucose into carbon dioxide and ethanol following the following reaction: C₆H₁₂O₆ ( 2(C₂H₅OH + CO₂ [Brady Burkhart‚ Terrell Grayson and Eric Kimler‚ 2009] Because yeasts produce ethanol and
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A 2007 study finds that discharge of untreated sewage is the single most important cause for pollution of surface and ground water in India. There is a large gap between generation and treatment of domestic waste water in India. The problem is not only that India lacks sufficient treatment capacity but also that the sewage treatment plants that exist do not operate and are not maintained.[1] The majority of the government-owned sewage treatment plants remain closed most of the time due to improper
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showed how chloroplasts in water can still function if there is light and an electron acceptor to release oxygen. He proved that the oxygen in photosynthesis comes from water instead of carbon dioxide‚ which had previously been the consensus. He also demonstrated the difference between light-dependent (“photo”) photosynthesis and light-independent (“synthesis”) photosynthesis (Stegenga‚
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Running head: Should water be sold as a product or it is a human right that cannot be sold Water as the commodity Bakai Raiymkan uulu KIMEP University‚ Almaty Abstract Outline 1. Introduction A. Water is necessary for a wide range of human activities. B. Water is a finite resource. C. Water is distributed unequally among the nations. Thesis Statement: While some see the positive sides to considering water as a commodity‚ others foresee the negative effects that such idea
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