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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FORENSIC SCIENCE Notes Chapter 1: Introduction Sir Bernard Spilsbury is the 1st forensic science celebrity. A legal system does the following process‚ 1. Collect evidence from experts‚ witnesses and police 2. Prosecution and defense lawyers present cases and arguments 3. Judge and Jury (abolished in some countries including Singapore) decides outcome *Innocent until proven guilty beyond reasonable doubt. Limits of Forensic Science Actus Reus: A guilty action Mens Rea: A guilty mind or intention
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Plant Pigments and Photosynthesis Problem: We are going to separate and identify pigments and other molecules from cell extracts through a process called chromatography. We will also test the theory that light and chloroplasts are required for light reactions to occur. Background: Pigments are chemical compounds which reflect only certain wavelengths of visible light. This is what makes them seem colorful. Many things contain pigments including flowers‚ corals‚ and even skin. More important than
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Question 2 1 / 1 point Which materials/chemicals belong in the desiccator? Question options: Drying agents such as anhydrous magnesium sulfate silicagel 1 M NaOH aqueous standard solution aqueous extract of your reaction alumina for chromatography Question 3 1 / 1 point Vacuum tubing is the thick-walled black tubing‚ not the skinny tygon tubing. Question options: True False Question 4 1 / 1 point Match the letters to the safety equipment. (You have to enter numbers 1-6 as answers)
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Haryana‚ 122002‚ India Tel.: +91 124 402 4205 in 1998 after her MSc and completed her thesis Fax: +91 124 403 6038 work in 2004. During this period she learned Email: tripathi.meenakshi3@gmail.com various techniques such as paper and thin-layer chromatography (TLC) along with HPTLC‚ HPLC‚ spectrophoto- and fluoro-metry as well as biochemical techniques on enzymology. She utilized these techniques to evaluate the risk and intake pattern of commonly used food additives: colors and artificial sweeteners
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next step? A filter the mixture C evaporate the water B carry out chromatography D freeze the mixture © Cambridge University Press IGCSE Chemistry Self-assessment practice test 1 2 6 Coloured sweets contain edible dyes. These dyes can be separated by chromatography. The diagram shows results obtained from three different orange sweets. red red yellow yellow yellow red sweet 1 sweet 2 red sweet 3 How many different red dyes were present in these orange sweets? A 4 7 B 3 C 2 D 7 Which of
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visualization reagents must be used to identify this compound. Amino acids react with a dye called ninhydrin to form a highly conjugated aromatic derivative which absorbs light in the visible portion of the spectrum. Furthermore‚ ninhydrin amino acid derivative became blue-violet color and easily visible. For example‚ determination of tryptophan in proteins and feed stuff has been carried out by ion exchange chromatography with the use of ninhydrin in amino acid estimation (Khan‚ 2008). Besides‚ Ninhydrin
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Section 1 Purpose: The purpose of this lab was to separate plant pigments using chromatography‚ calculate Rf values using the collected data‚ and study photosynthesis with isolated chloroplasts. Light energy Light energy Background Information (Activity A): In photosynthesis‚ plant cells convert light energy into chemical energy that is stored in sugars and other organic compounds. It is an endergonic and anaerobic reaction. Critical to the process is chlorophyll‚ the primary photosynthetic pigment
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continents‚ have generated the complete DNA sequences of many animal‚ plant‚ and microbial genomes. The first DNA sequences were obtained in the early 1970s by academic researchers using laborious methods based on two-dimensional chromatography. Following the development of dye-based sequencing methods with automated analysis‚[1]DNA sequencing has become easier and orders of magnitude[clarification needed] faster. [pic] [pic] DNA Sequence Trace |Contents
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cutting has occurred‚ gel electrophoresis is used to separate the cut fragments. The gel used in the electrophoresis chamber is agarose gel which is derived from several species of red marine algae‚ or seaweed. It is also used in size exclusion chromatography. Agarose gel is used to separate and analyze proteins and DNA. In this experiment‚ agarose gel electrophoresis is used to separate the cut fragments. The DNA fragments are
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