Dear Tetchie By Sylvia L. Mayuga INQ7.net Posted date: May 29‚ 2006 (Editor’s note: Tetchie Agbayani remains a blast of a human being. This article about her‚ published as a column 24 years ago‚ has just been echoed and confirmed by her most recent portrait in Newsbreak) Once in a while someone like you comes up to magnetize the public eye and‚ like litmus paper‚ shows up the acidity or alkalinity in us all. You’d think someone‚ anyone‚ might say‚ “Thank you.” What for? You and the activist
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Procedure: The addition of 4.0 mL cyclohexanol‚ 1.0 mL of 85% phosphoric acid‚ and one boiling chip‚ were all added to a 10 mL round bottom flask that would be attached to the end of an assembled simple distillation set up. A sand bath was placed atop a hot plate‚ and the simple distillation mechanism was lowered into the sand bath with the bottom most piece (the 10 mL round bottom flask) submerged about half way. The distillation process was completed after a sufficient amount of liquid distillate
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According to my forensic teams research‚ the evidence sample contained starch. My team was also able to determine that the evidence sample dissolved in water ‚and felt like a powder. Performing different tests helped to determine the ingredients that the evidence consisted of. First‚ my team performed a water test‚ by mixing drops of water with the substances A through E and the evidence sample. The forensics then conducted a vinegar test and an iodine test‚ to test for Co² and starch. Finally‚ a
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ANALYSIS OF MOUTHWASH Background Information: Commercial mouthwashes are mixtures of water‚ alcohol‚ dyes‚ flavorings‚ and other compounds. In this experiment‚ you will use gas chromatography to determine the alcohol content of the mouthwash. Since the volumes of alcohol and water are not additive when mixed‚ a calibration curve must be used. It will provide the correction factor needed for alcohol-water mixtures. The calibration curve will be prepared by placing a known amount of alcohol
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Introduction: Experiments 1 and 2 main aims are as follows: • To able to use the Beer-Lambert law to explain the relationship linking concentration and absorbance of the coloured solutions methyl orange and bromophenol blue. • To be able to rightly operate a spectrophotometer to assess the absorbance at various wavelengths • To be able to identify the main component parts of a spectrophotometer • To be able to draw a ‘Standard Curve’ from the data collected
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In this experiment the initial mass of the sodium carbonate used was 2.69g. In each titration‚ 3 drops of methyl orange was added to the sodium carbonate solution. With this information the titration can begin‚ and the results obtained are shown below: Titration readings Titration Rough 1 2 3 4 5 Initial 0.00 4.30 22.00 21.00 15.00 25.90 Final 4.30 22.00 38.60 37.60 32.60 42.20 Titre (cm3) 4.30 17.70 16.60 16.60 17.60 16.30 Therefore‚ the average titre would be calculated as follows;
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The average contents (±SD) of kaurenoic acid in the Araliae Continentalis Radix extract powder were estimated as 1.147±0.008 mg in 1.0054 g‚ usual dose of Araliae Continentalis Radix. Quantification of kaurenoic acid UPLC–MS/MS has been emerging as a powerful analytical technique for the determination of analyte in biological samples to improve sensitivity and selectivity. Herein‚ we developed a simple‚ selective‚ and sensitive bioanalytical UPLC-MS/MS method for the quantification of kaurenoic
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monoprotic acids were determined with the aid of a buffer and pH meter. Experiment: This experiment was performed according to the procedures as provided in the Chemistry 111B laboratory manual: Po‚ Henry and Senozan‚ N. "General Chemistry Experiments Chemistry 111B"‚ 8th Ed.‚ 2004 Hayden-McNeil Publishing‚ pp 80-88. To determine the dissociation constants of weak monoprotic acids (HX and HY)‚ a buffer was needed to calibrate the pH meter. According to the manual‚ all four solutions to the experiments
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the relationship between enzymatic reaction affected by temperature and pH. Through the testing the enzyme at different temperatures‚ and different pH levels; it would determine at which temperature and pH level the enzyme worked the most efficiently. Analyzing absorbance of the solutions with spectrophotometery will determine the reaction rate. To test the optimal pH‚ the starch and a buffer were combined at a specific pH level and tested the absorbance of a solution at various times. To resolve
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Communication in the workplace is essential for success. To increase understanding of a person’s personality and their work ethics the Myer’s Briggs Personaliyt Test was developed to assess a person’s psychlogical profile and give insight on how they relate to other people . This can be a good tool to determine compatibility in the workplace and give insight on how to communicate with a person. This paper will focus on my personality type‚ whether I belive this is an accurate assessment‚ give
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