Recrystallization and Melting Point of Benzoic Acid Organic Chemistry 1 10/4/12 Abstract Recrystallization was done to remove impurities from the sample. The percent recovery of benzoic acid during recrystallization is 23.02%. The difference between the pure and impure samples was observed by comparison of melting points. It was found that impure sample had a lower and wider melting point range of 120.1-122.2 (C). The pure sample melting point range was 121.3-122.5 (C). These ranges helped determine
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into the first main point of the body. A connective is not required here but may be used if desired. For information on connectives‚ review pages 177-178 of your textbook. Skip a space above and below connectives.) BODY I. A single complete sentence expressing the main point of this section of the speech A. Sub point [As with main points‚ sub points should be written in full sentences.] 1. Sub-sub point [Write sub-sub points in full sentences.] 2. Sub-sub point B. Sub point moving from the introduction
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Have you ever heard that America is a melting pot or a salad bowl? The metaphor for the melting pot is unfortunate and misleading for America. A more accurate metaphor would be a salad bowl‚ for the salad bowl can be very different from the melting pot because of all its ingredients can make it distinguished from the melting pot. Even today Americans are calling America a salad bowl instead of a melting pot. Whereas it once was a melting pot but soon changed. There have been many questions
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Melting Pot or Mosaic‚ which one? Culture is a behavior that consists of several critical elements‚ such as language‚ religion‚ race and ethnicity‚ clothing and politics. Culture is what one does in his/her daily life. In order to understand others‚ we must first keep in mind that every culture carries its own set of values and assumptions. Culture is an evolving‚ ever changing civilization‚ which includes several different groups people. For immigrants‚ America is a land of opportunity; for others
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The percent yield of meso-1‚2-dibromo-1‚2-diphenylethane was calculated to be 66.36% and with a melting point of 235.1°C. Therefore‚ it can be concluded that this experiment was successfully conducted as the percent yield obtained is only 33.64% off from the equilibrium point‚ and because the melting point met the literature value. The percent yield for the product was less than 100%‚ indicating that were experimental errors‚ such as an undesirable side reaction‚ or more likely‚ an incomplete reaction
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synthesis of Acetaminophen is based on the amine group of p-aminophenol being acetylated by acetic anhydride to form an amide functional group. Acetaminophen is isolated as a crude solid which is then recrystallized to purify the product. Using melting point determination the recovered products purity is identified and can be compared to the theoretical value. In this experiment 3.0g of p-aminophenol along with approximately 10ml of deionized water will be heated in a water bath regulated at 65-75
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“cut-throat” competition. Automation of one’s point of sale and inventory system puts you a step ahead in the game. It helps you conduct business transactions with ease as you only have to press a few keys. It liberates you from countless paper works as computation of the day’s sale and keeping track of inventory are done automatically. With these things in mind‚ the proponents hopes that upon completion of this Proposed Point of Sale and Inventory System‚ will find it of great
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the freezing point will be somewhat lower‚ and there will be a range of temperatures instead of a single temperature. PROBLEM To evaluate the samples‚ you will need a heating/cooling curve for pure Na2S2O35H2O that you can use as a standard. To create and use this curve‚ you must do the following. • Obtain a measured amount of pure Na2S2O35H2O. • Melt and freeze the sample‚ periodically recording the time and temperature. • Graph the data to determine the melting and freezing points of pure Na2S2O35H2O
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pleasant flavor‚ innocuousness‚ smoothness during application‚ adherence and easy intentional removal. This work involved the development of a lip balm formulated with certified organic raw materials and the execution of stability tests: fusion point determination‚ evaluation of organoleptic characteristics (color‚ odor and appearance) and functionality evaluation (spreadability test). The formulation selected after the Preliminary Stability Test was submitted to the Normal Stability Test under
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In my opinion the nation is a melting pot. We are a melting pot because despite differences you cannot per say pick up one chunk of something without getting a whole lot of something else. No matter what we are all connected. If the nation were a salad you could pick up something without the involvement of another issue or people. Despite few issues that people are still fighting for equality‚ I would say over all we as a nation are fighting for this equality as a whole. For example gay marriage
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