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Introduction: The purpose of this experiment is to use sodium borohydride to reduce benzil. However‚ stereochemistry allows for five possible products. If only one carbonyl group is reduced during the reaction a racemic mixture of benzoin will be the product that is produced. After the first reduction a chiral center forms causing the second reduction to occur from only one side of the ketone. Depending on which side the second reduction take place there are three possible products including: a racemic
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Abstract In order to experiment with distinct components of a mixture‚ they must be first separated so they can be observed individually. This is accomplished in this lab by the technique called thin layer chromatography (TLC). TLC involves a stationary phase‚ which the TLC plates as well as a mobile phase‚ which could be one of two solvents used: ethanol-acetone for TLC. Dyes in a sample separate consequently because of their unique polarities. As a result‚ nonpolar substances travel further
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The author of Paper Towns is John Green. He was born on August 24‚ 1977‚ in Indianapolis‚ Indiana. He went to Kenyon College and earned double degrees in Religious Studies and English. He worked as a student chaplain in a children’s hospital. Green spent lots of time with terminally ill children‚ who inspired him to become a writer. Because of the sick children‚ Green was determined to use his power of writing to make the world a better place. He is a New York Times bestselling author of multiple
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Current Regulations for Standardization of Crude Drugs In India a great deal of bulk knowledge exists among ordinary people about the traditional use of herbal medicine. It is difficult to quantify the market size of the traditional Indian system. Since most practitioners formulate and dispense their own recipes. The present annual turnover of product manufactured by large companies is estimated at approximately US $ 300 million compared to a turnover of approximately US $ 2.5 billions for modern
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Lab #1 Extraction and Thin Layer Chromatography Kaya Gaudet 6784928 January 9‚ 2013 Line Structure References BenzophenoneBiphenylBenzoic Acid Extraction: A process used to separate different compounds in a mixture based on their solubility in an immiscible substance. Usually an aqueous and organic phase are used. During extraction the desired compound moves one phase and leaves the unwanted substance behind. Extraction normally has to be done a few times to leave all of the impurities
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with either 85% phosphoric acid or concentrated sulfuric acid [1]. The objective of this experiment is to dehydrate 3-methyl-3-pentanol to obtain the product mixture of isomeric alkenes 3-methyl-2pentene and 2-ethyl-1-butene. Then use the gas chromatography to separate the product mixture and analyze the composition [2]. [pic] [pic] [pic] Figure1: Table of Reagents |Name |Molecular Weight |Density |Melting Point
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Renova Toilet Paper Renova has established itself as a global organization in the disposable paper industry with about 600 workers and posting sales of 104 million euros in 2005 specially within Portuguese‚ Spanish‚ French and central European markets. As a global market‚ the tissue one is dominated by strong companies as Procter and Gamble and Kimberly-Clark‚ two giants big enough to destroy any intention to survive unless Renova is able to overcome with a differentiation strategy. My analysis
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should really know: How to make a good paper airplane. One day‚ each of you will grow up‚ and probably have at least one male child‚ and this skill can provide them with hours of fun that is incredibly cheap! Or maybe you’ll be an elementary school teacher trying to find something fun and easy to do with your students for a short period of time. What better way of entertaining a group of kids than by teaching them to make their own toys? So to make a good paper airplane‚ all you have to do is follow
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Arlind Mara Paper Towel Lab Report AP Biology 15 September 2011 Which Towel is The Quicker-Picker Upper! To determine which of the most popular paper towel brands such as Bounty and Marcal would be the Quicker-Picker-Upper I conducted the following experiment during which I dipped 6in X 6in squares of paper towels into 100mL and measured the amount of water absorbed by the towels in 20 seconds. After averaging all 3 trials for the paper towel brands that I tested I arrived to the conclusion
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