used to separate the pigments that make up chlorophyll to analyse‚ identify‚ and quantify the components‚ using paper (stationary phase – the part of the apparatus that does not move with the sample) and chromatography solvent that was 90% petroleum ether and 10% propanol (mobile phase – liquid that carries the components). A light pencil line is drawn across the strip of paper (about 2cm from one end) and the other is attached to the splint‚ making sure that the paper doesn’t touch the bottom of
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By the year 2030‚ two thirds of the world will be unable to access water. Tapped by director Stephanie Soechtig introduces a small town in Maine‚ and discusses the water corporation called Nestle. The corporation decided to take the water resources of Maine. The supply and demand of water from major cities make the corporation pump plenty from the ground. Many question if the water from the corporation if it is safe to drink‚ and whether plastic is safe for water to be held in. The document targets
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WHAT IS PHARMACOGNOSY? Pharmacognosy is the study of drugs of natural origin. The term comes from two Greek words: "pharmakon" meaning drug or medicine‚ and "gnosis" meaning knowledge. The American Society of Pharmacognosy defines pharmacognosy as "the study of the physical‚ chemical‚ biochemical and biological properties of drugs‚ drug substances or potential drugs or drug substances of natural origin as well as the search for new drugs from natural sources". Plant preparations are said
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AS-B Angelina 12054 25th‚Nov. Practice prompt 4 for 2nd Monthly Test Life without Internet The moment Selena reached down and unplugged the ether-net cable from her computer‚ she felt like school was out for the summer holiday‚ and the simultaneous relief and boredom that last bell brought. She sat quietly for a while‚ and soon realized that she had been anticipating this moment for ages‚ but for some limitations of her job‚ she had not made any plans: she was employed in a private consulting
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The Endocrine Disruptor: TRICLOSAN What is Triclosan? * Triclosan (2‚4‚4’ –trichloro-2’-hydroxydiphenyl ether) is a chlorinated aromatic compound. Its functional groups include both phenols and ethers. It is used as a synthetic broad-spectrum anti-microbial agent. Triclosan was first registered as a pesticide in 19693. What is Triclosan Used For ? * Triclosan is an anti-microbial active ingredient contained in a variety of products where it acts to slow or stop the growth of bacteria
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Exercise 3: Neurophysiology of Nerve Impulses Worksheet Assignment Due: Week 4 Student instructions: Follow the step-by-step instructions for this exercise found in your text and record your answers in the spaces below. Submit this completed document by the assignment due date found in the Syllabus. Please make sure that your answers are typed in RED. Please type your Name and Student ID Number here: Charles Coon 4048223 Eliciting a Nerve Impulse Activity 1: Electrical Stimulation
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Lab 5: The SN2 Reaction: 1-Bromobutane From K. L. Williamson‚ Macroscale and Microscale Organic Experiments‚ 2nd Ed. 1994‚ Houghton Mifflin‚ Boston. p247; revised 2/22/02 Prelab Exercise: Write a detailed flow sheet/ flow chart for the isolation and purification of 1-bromobutane. Designate how each minor-product is removed from the major product and which layer holds the product in each experimental step performed. [pic] Introduction This experiment utilizes SN2 chemistry
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and it was a success (Poetry). Nitrous oxide did not have the strength to relieve surgical pain. In 1842‚ a doctor by the name of Long had been high on ether‚ an organic solvent‚ at a party‚ and realized he had bruised himself but never felt any pain. Dr. Long convinced his patient James‚ who had two cysts in his neck‚ to try a bit of ether for his procedure. James passed out and woke up
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related disease and was also applied to sore toe nails. Canabis is a safe alternative for the treatment of a wide range of disease in womens like dysuria‚ hypermesis gravidarum {E.Russo et al .‚2002}.The antimicrobial activity from ethanol and petroleum ether extract against various microorganisms has been reported{K Wasim et al .‚1995}. Cannabis was also been reported to have pharmacological and antimicrobial effects {O.Polunin et al.‚ 1969}. The Cannabis sativa found in neighbouring country Pakistan is
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Chapter 17—Alcohols and Phenols SHORT ANSWER Drawing Instructions: Draw structures corresponding to each of the given names. 1. Draw: cis-4-tert-butylcyclohexanol ANS: 2. Draw: 3-methyl-2-buten-1-ol ANS: 3. Draw: 2-phenyl-2-propanol ANS: 4. Draw: glycerol ANS: 5. Draw: 2‚ 4‚ 6-trinitrophenol ANS: IUPAC Naming Instructions: Provide proper IUPAC names. 6. Name: ANS: (E)-2-ethylbut-2-en-1-ol 7. Name: HOCH2CH2OH ANS:
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