"Mixture" Essays and Research Papers

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    Process

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    cooking which is also preferable. After cooking‚ the rice mixture then is spread on a ligau (rattan-made winnower)‚ cooled and sprinkled with powdered binokbok (organic yeast). It is evenly mixed using a wooden spatula and placed in a lopahan (rattan-made container) to ferment. The mixture must be kept in a dry and dark room but the initial juice that flows from it must be collected first before keeping. After two-three days‚ the mixture is now transferred into a jar. One must see to it that the

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    The reaction mixture was stood for an additional 15 minutes to allow reaction to proceed to completion. 6.The reaction mixture was poured onto about 10g of crushed ice in a beaker. 7.The product was isolated by vacuum filtration. The solid with a tiny amount of ice cold 50% methanol(mixture 1:1 methanol-water). 8.The crude product was recrystallized using methanol as the recrystallization solvent. 9

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    Prac Report

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    2mole) of acetylacetone‚ these were added to an 100ml Erlenmeyer flask and were stirred with a glass stirring rod to produce the slurry. The mixture was then heated to 100°C on a hot plate the temperature was measured using a thermometer placed directly into the slurry. The mixture was removed from the heat and hydrogen peroxide was added directly to the mixture at a rate of 2ml/min ensuring that the solution did not bubble over from the hydrogen peroxide being added in

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    Kahit ano?

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    ABSTRACT The study aims to produce biodegradable plastic using cassava starch as its main component. Cassava starch was mixed with water‚ epoxydized soya beanoil (ESBO)‚ glycerol‚ and polyvinyl alcohol (PVA). The mixture was then compressed and tested. Three preparations were made from the mixture. The first preparation contained 50 grams starch‚ 50 grams water‚ 50 grams PVA‚ 2.5 grams ESBO‚ and 2.5 grams glycerol. The second preparation contained 65 grams starch‚ 65 grams water‚ 50 grams PVA‚ 2.5 grams

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    and pyrimidium tribromide by refluxing the mixture. To test the purity of product I will take the melting point which should be around 240 ºC along with a flame test which should be green-blue. CHEMICAL PROPERTIES TABLE See Attached Lab Notebook Copies REACTION MECHANISM In this lab we used multiple techniques to complete and verify the bromination of trans-stilbene. First technique we used was to reflux the mixture; this contains having the mixture boiling so it will evaporate while the condenser

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    the excipient as Poloxamer 188. Figure 4.6 DSC Thermogram of physical mixture of mirtazapine and excipients The DSC thermogram of the physical mixture of Drug and excipients shows the sharp endotherm at 112.88°C which is comparable to the endothermic peak of the pure drug obtained at 114.91 °C. Table 4.5 shows the individual melting points of the drugs and excipients and the endotherm obtained on analysis of the physical mixture. Table 4.5 Melting points of drug and excipients Excipient Drug Chitosan

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    and the liquid started to become more solid. In the third reaction of which Barium Chloride and Sodium Sulphate were mixed‚ bubbles were again visible‚ however there were very few. After a couple of minutes the mixture turned very cloudy‚ into a solid white colour. 10 minutes later‚ the mixture was completely clear and the compounds had very clearly separated into salt and completely translucent liquid. For all of the reactions‚ the temperature remained

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    I. Problem: Will natural dyes from plants effective in producing colored paste? II. Title: Using Natural Dyes form Plants In Producing Colored Paste III. Introduction: Our project is made from the raw materials such as starch‚ alum and annatto seeds. One of our reasons in making this project is it can help students save money because our product can be a substitute for glue. It doesn’t cost us too much time because we can make this in a short period of time. IV. Review of Related Literature:

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    The different compounds in a mixture have different boiling points‚ the two solutions separate into individual components when the mixture is carefully distilled by using fractional distillation. Problems 1. (a) What is the composition and temperature of the azeotrope? The composition of the azeotrope is 70% water and 30% formic acid. (b) What is the boiling point of the mixture when Xformic acid = 0.40? The boiling point of the mixture when Xformic acid = 0.40 is 105C. (c)

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    around .860 g. Gravity filtration was then used to filter the mixture into a 125 mL collecting flask. The mixture was filtered in order to separate the crude sucrose from the mixture. The original container was then rinsed through the filter paper again with 5 mL of DCM and the mass of filter paper containing sucrose was measured after it was dry. The last step was to perform the isolation of Aspirin. See image below. Part B The mixture of DCM and Panacetin were poured from the collecting flask

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