The Purity and Purification of Solids Recrystallization ABSTRACT In this experiment‚ impure adipic acid is purified though recrystallization. The impure adipic acid is dissolved in a solvent. After cooling it is ran through a vacuum filter to separate any moisture. The dry crystals are then weight for percent yield and the melting point range is taken to test the purity. There were two different trials ran in this experiment. The difference between the two was the addition of charcoal in
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Purity of Aspirin Objectives - To research‚ using various sources‚ the history of aspirin‚ its use in medicine‚ methods of synthesizing it and of measuring its purity - To compare the % purity of a branded aspirin tablet with a generic aspirin tablet - To compare 2 methods of composition analysis of the two types of aspirin Research
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EXPERIMENT #1: THE PURITY AND PURIFICATION OF SOLIDS MELTING POINTS ABSTRACT Melting points of different mixtures of naphthalene and biphenyl were examined in this lab. Samples of these various mixtures were collected and tested by different individuals in the lab in order to find the eutectic point of biphenyl. Unknown substances were then tested using the mixture melting point method in order to determine their identities. INTRODUCTION The melting point of a solid is the temperature
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The Fight for Food Purity Economic Botany September 29‚ 2013 Michael Pollan’s film‚ The Botany of Desire‚ opened my eyes to the complicated relationship between people and plants. Pollan opened up with the following statement: “Flowers. Trees. Plants. We ’ve always thought that we controlled them. But what if‚ in fact‚ they have been shaping us?” (Pollan‚ PBS) I paused the film and took a few minutes to let this soak in. I was always under the impression that we
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The Power of Purity A vision in white surrounded by the air of purity and near divinity was the image of a Vestal virgin. These women became synonymous with the eternal existence and safety of Rome. The representation of influence‚ devotion‚ and power were characteristics of these six women who sacrificed their sexuality and family cults to serve the Goddess Vesta and to profit from the advantages that such devotion earned. The life of a Vestal virgin was unlike that of any other Roman woman with
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Extracting NaCl from Rock Salt and assessing its purity Aim The aim of this experiment was to obtain a pure product from a solution through the processes o extraction‚ filtering and evaporation. Introduction Extraction is used when trying to separate or purify a product. For an extraction to be successful the substance used to make the solvent should readily dissolve. The substance used in this practical was rock salt. The liquid used should not react with the substance that needs extracting
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“The Ganga‚ especially‚ is the river of India‚ beloved of her people‚ round which are intertwined her memories‚ her victories and her defeats. She has been a symbol of India’s age-long culture and civilization‚ ever changing‚ ever flowing‚ and yet ever the same Ganga‚” (Jawaharlal Nehru). Spoken by the First Prime Minister of India‚ this quote summarizes the importance of the Ganges River. The Ganges‚ one of the holiest rivers in the country‚ functions not only as a source of agriculture‚ energy
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The Purity and Purification of Solids- Part 2- Recrystallization Courtney Percival CH 337 Laboratory‚ Section 037 Department of Chemistry Portland State University‚ Portland OR ABSTRACT INTRODUCTION Recrystallization is a commonly used tool in laboratories when dealing with impure solids. "An effective recrystallization is one in which 1) a high degree of purity is achieved as well as 2) a maximum recovery of sample".1 Solubility‚ the tendency of a substance to dissolve in a liquid‚ is an
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Jesus Violate Jewish Purity Codes
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Purity and Innocence –Comparing Tess Durbeyfield with May Welland Tess Durbeyfield‚ the innocent and exceptionally gifted peasant girl of decayed aristocratic stock‚ is described as “A Pure Woman” by Thomas Hardy in the novel’s subtitle; May Welland‚ a beautiful girl immersed within the New York society upbringing‚ in Newland Archer’ eyes‚ is innocent‚ childlike and carefree. But as the two plots thickened‚ Tess is regarded as impure by everyone in the novel and we realize that May is more
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