the entire mix since it is not homogeneous. 2) Pour the solution into a separatory funnel. 3) To extract the nicotinamide from the mixture‚ add 5 mL of 5% HCl and shake gently. Draw off the lower aqueous layer into 125 mL Erlenmeyer flask and repeat the extraction with a second portion of HCl. Combine the three extracts and then set this mixture aside. 4) To separate the trans-cinnamic acid from the mixture‚ extract the ether solution twice with 5 mL of 5% sodium bicarbonate. Combine the extracts
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ACKNOWLEDGEMENT First of all‚ we would like to say thanks to God‚ for giving me the strength and health to do this project work until it done. Not forgotten to our family for providing everything‚ such as money‚ to buy anything that are related to this project work and their advise‚ which is the most needed for this project‚ Internet‚ books‚ computers and all that as our source to complete this project. They also supported us and encouraged us to complete this task so that we will not procrastinate
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4. Both weighed plate were clipped using crocodile clips and the batteries were placed in the battery socket. After that‚ both plates were immersed in copper (II) solution and the stop watch was started to allow the apparatus to run for 30 minutes.5. the reading of ammeter was recorded. Then‚ both plates were taken out from the solution‚ and
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Objective: To observe the effects of osmosis on eggs placed in vinegar (5% acetic acid)‚ syrup (60% sugar solution)‚ and water (100% distilled). Hypothesis: Hypothesis #1: It was hypothesised that the egg would gain 59 grams of mass after soaking in vinegar for 24 hours. Hypothesis #2: It was hypothesised that the egg would become larger when soaked in syrup than it once was due to the hypotonic environment. Hypothesis #3: It was hypothesised that the egg would soak in water for 72 hours‚ losing
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Macroscopic Evaluation of Wound The day when the wounds were created was designated as day 0‚ and the process of wound healing was observed daily from day 0 to day 14. Before observation‚ the environment surrounding the wounds was cleaned with saline solution. Wound edges were traced on polypropylene sheets and photographs were taken every day. The traces on the sheets were captured with a scanner onto a personal computer using Adobe Photoshop Elements 7.0 and the areas of the wounds were calculated using
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Molarity of these samples was also calculated to determine concentration and percent error rate. Students also analyzed the concentration of blue dye #1 to determine the concentration of blue dye #1 in a commercial blue dye drink. Procedure: To drop solutions into the test tubes and then determine the Beer’s Law relationship of each and the calculations of each of part of the experiment. Convert %T to absorbance and prepare a Beer’s Law plot using this data. 1. Concentration of Various Samples Sample
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------------------------------------------------- ABSTRACT Separation processes by using the application of membrane have become highly demand in various industries. In this newly separation process ‚ the membrane function as a semi-permeable barrier and the separation process occur by the membrane controlling the rate of movement of various molecules between two liquid phases ‚ two gas phases or a mixture of a gas phase and liquid phase. In industries‚ many companies have high demand on both quality
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characterized using TG‚ DTA‚ IR spectroscopy‚ X-ray and atomic absorption spectrophotometry. The thermal conversion of the compounds is 54.36–88% at 1000°C. Their solubility in sodium hydroxide‚ mineral acids‚ organic solvents‚ distilled water and salts solution has been measured. Fungicidal activity of the dithiocarbamates has been tested by well or cup diffusion method using five fungi species. Their activity has also been tested by broth dilution method using six bacterial species. Minimum Inhibitory
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Cited: Page Acetaminophen 10 pages [online] AOL.com October 14‚ 2007 Butt‚ John B. “Osmosis.” The World Book Encyclopedia. Ed. 2000‚ page 865-866. Butt‚ John B. “Solution.” The World Book Encyclopedia. Ed. 2000‚ page 587. Martin‚ Seth Solubility of Solutes and Aqueous Solutions LSU Undergraduate Chemistry Information Depot (1997) page 1 [online] google.com. October 14‚ 2007 http://www.chem.lsu.edu/lucid/tutorials/solubility/Solubility.html Ogbru‚ Outcome Acetaminophen
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can be placed on ice and one should be left at room temperature. The flask should be placed on ice for about fifteen minutes until the water temperature is equal to the ice bath temperature. To indicate the rate of diffusion one milliliter of dye solution can be placed in each flask. Over period of one hour the colder flask will result in slower diffusion that the flask at room temperate. This experiment accurately supports that at higher temperatures molecules will diffuse faster. Diffusion in a
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