Abstract Pigments extracted from different greens have different polarities and may be different colors. Mixed pigments can be separated using chromatography paper. Chromatography paper is able to separate mixed pigments due to their polarity and solubility. Pigments of chlorophyll a‚ chlorophyll b and beta carotene will be separated on chromatography paper because each has its own polarity and solubility‚ which results in different distance traveled up the paper. Beta carotene is non-polar so it
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soft soils using geogrid encased stone columns Joel Gniel 1‚ Abdelmalek Bouazza* Monash University‚ Department of Civil Engineering‚ Building 60‚ Melbourne‚ Victoria 3800‚ Australia a r t i c l e i n f o a b s t r a c t Article history: Received 16 May 2008 Received in revised form 4 November 2008 Accepted 5 November 2008 Available online 19 January 2009 In recent years‚ geotextile encasement has been used to extend the use of stone columns to extremely soft soils. Although the
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Lab #3 Separating Metal Cations by Paper Chromatography Introduction/Purpose: In chemistry‚ it is important to effectively analyze the components in a given mixture. In order to do so‚ chemists will analyze a mixture either qualitatively or quantitatively using different methods and equipment. Qualitative analyses are subjective‚ and only gather “non-numerical” data such as the color‚ appearance‚ and smell of the components. This data
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Chemistry 266 Dominick Armstrong 10/10/2012 Acid-Base Titration Introduction Acid and bases are two important classes of compounds that react to form a salt and water. When mixing acids and bases a precise amount of the base must be added in order to reach the equivalence point. At this point‚ one reactant has been exactly consumed by the addition of the other reactant. When performing chemical reactions chemist use a process called titration to determine the equivalence point of the
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Is Higher Education Worth the Price? The question of whether or not higher education is actually “worth it” is an entirely subjective on. To objectively determine if higher education will give a high return on investment‚ one needs to first understand what they are hoping to gain out of the entire experience. Higher education does worth the price because it helps students to build their self-fulfillment‚ provide more monetary opportunities and reach their final goal . In the United States‚ for
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family and along the way saw many barbeque places. And they were delicious! Southern culture is also brought up when the grandmother recalls the old plantation. She paints a picture of what I always envision when I think of one‚ with “six white columns” and “an avenue of oaks leading up to it.” Finally‚ religion was an important part of southern culture. Though it doesn’t say of which religion the grandmother belongs to‚ she brings up religion during her confrontation with The Misfit. She plays
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must you use lead pencil‚ instead of a pen‚ to mark your chromatography paper? A lead pencil should be used instead of a pen because the ink of the pen would dissolve in the eluting solution and separate. The components of the ink could mix with the other ink/ dyes that would be tested on the same chromatogram. Thus‚ a lead pencil should be used. 2. Why should you avoid touching the surface of the paper to be used for amino-acid chromatography? We should avoid touching the surface of the chromatogram
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Drugs screen using Thin Layer Chromatography of basic illicit drugs Abstract The majority of evidence submitted to crime labs comes from drug-related crimes. Often‚ this evidence includes unidentified powders that may be illegal drugs. In order to prosecute individuals for possession of illegal substances‚ it is necessary for forensic scientists to positively identify any suspected drugs submitted to the laboratory. In addition‚ forensic toxicologists must determine the identity
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CHAPTER 4 RESULTS AND DISCUSSION 4.1 Identification of camphor and menthol using gas chromatography – mass spectrometry (GC – MS) In this study‚ the presence of menthol and camphor were determined from 5 different locally produced medicinal topical ointment samples. Sample of Vick® VapoRub® and Hurix’s Massage Balm were purchased from local pharmacies‚ Bunga Cengkih Balm and Serai Balm samples were purchased from the grocery shop. Buah Pala Balm sample was purchased from the night market
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Palladio‚ the Column‚ and the Utilisation of Columnar Forms from Late Imperial Roman Architecture Palladio‚ the Column‚ and the Utilisation of Columnar Forms from Late Imperial Roman Architecture Palladio revered the column. It was his favourite structural element and architectural ornament. Palladio also revered antiquity. He thoroughly documented the five orders in the first book of Quattro Libri‚ and devoted the fourth book to “the ancient temples” where columns are presented in their original
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