numerals and charge notatios for the uranyl ion. The oxidation state of the metal is shown as superscripted Roman numerals‚ whereas the charge of the entire complex is shown by the angle symbol together with the magnitude and sign of the net charge. Monatomic ions are sometimes also denoted with Roman numerals; for example‚ the Fe2+ example seen above is occasionally referred to as Fe(II) or FeII. The Roman numeral designates the formal oxidation state of an element‚ whereas the superscripted numerals
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acid is benzoic acid( benzene carboxylic acid) which has a benzene connected to the carboxyl carboxyl group‚ -COOH group. It has a formula of C6H5COOH. The carbon atom of a carboxyl group has a high oxidation state. Therefore‚ that many of the chemical reactions used for their preparation are oxidations. In this experiment‚ an aromatic carboxylic acids namely benzoic acid will be prepared by oxidizing benzyl alcohol which is a primary alcohol. The oxidizing agent used is alkaline potassium permanganate
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Explain the trends of dialect leveling and internal variation in the process of development of new varieties of Englishes. "Dialect differences are reduced as speakers acquire features from other varieties as well as avoid features from their own variety that are somehow different. This may occur over several generations until a stable compromise dialect develops."(Siegel‚ 1997) The writer here is referring the linguistic accommodation made by speakers with different dialects to eventually converge
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has a four number name. The enzyme for this reaction is malate dehydrogenase (MDH). Its enzyme commission number is 1.1.1.37. The first number is in reference to its class. In the case of MDH‚ it is a oxidoreductase meaning that it carries out oxidation-reduction
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is a molecule that inhibits the oxidation of other molecules. * Oxidation is a chemical reaction that transfers electrons or hydrogen from a substance to an oxidizing agent. Oxidation reactions can produce free radicals. * These radicals can start chain reactions. *When the chain reaction occurs in a cell‚ it can cause damage or death to the cell. * Antioxidants terminate these chain reactions by removing free radical intermediates‚ and inhibit other oxidation reactions. * They do this by being
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Plastic materials trace their origin in this country back to 1868‚ when a young printer named John Wesley Hyatt came up with Celluloid‚ the first American plastic. He mixed pyroxylin‚ made from cotton (one of nature’s polymerics)‚ and nitric acid‚ with camphor to create an entirely different and new product. Celluloid quickly moved into many markets‚ including the first photographic film used by George Eastman to produce the first motion picture film in 1882. The material is still in use today under its
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High intensity interval training (HIIT) is a new popular method of exercising that optimizes your workout by completing a series of short‚ high intensity exercise (90% of your maximum heart rate =220-age).‚ followed by longer‚ lower-intensity exercise (55 to 70 % of your maximum heart rate=220-age). High intensity interval training is said to be significantly more beneficial than other forms of cardiovascular workouts because it challenges the body differently and is more extreme then a moderate
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The Nitrogen Cycle Nitrogen fixation Atmospheric nitrogen must be processed‚ or "fixed" to be used by plants. Some fixation occurs in lightning strikes‚ but most fixation is done by free-living or symbiotic bacteria. These bacteria have an enzyme that combines gaseous nitrogen with hydrogen to produce ammonia‚ which is then further converted by the bacteria to make their own organic compounds. Conversion of N2 The conversion of nitrogen (N2) from the atmosphere into a form readily available
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Constance Whitney Warren’s bronze sculpture entitled‚ Equestrian Portrait of Diego Velazquez 1924 is located between the General Academic Building and the Physics Building at the University of North Texas Denton Campus. Gift of the Harlan crow family in 1994 but the reasons remain in mistery. The composition of the ten foot bronze sculpture was created inspired by the American West and specializing in bronze equestrian statues‚ portrays the famous Spanish painter Diego Velazquez who is riding a horse
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is expensive. The chemical kinetics of gas phase oxidation of ethanol has been reported over last five decades. Data have been reported from nonflow reactors‚ flow reactors‚ diffusion flames‚ and laminar premixed flames experiments by several researchers [2-5]. Detailed chemical kinetics models to describe the gas-phase oxidation of ethanol in air are available in literature [6]. Apart from that a global single step mechanism for ethanol oxidation is also available [7]. Experimental studies have
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