In today’s world‚ advancements in science and chemistry are fundamental for saving lives from diseases and saving the planet from pollution. Advances in science are transforming our world at an incredible pace. A recent advancement in science is the finding of another flu virus in Chinese chickens. Scientists found this virus before it progressed to infecting humans. Scientist can develop a way of exterminating this type of flu‚ thus saving human lives. Science saves lives everyday. In parts
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CHEMISTRY OF NICOTINE Date Submitted: March 17‚ 2010 Introduction Tobacco has a long history and has had a significant impact since first introduced to Western society in the 16th century. There is evidence that Native Americans were using tobacco long before the 16th century. They smoked through a pipe for special religious and medical purposes but the worldwide spread of tobacco was initiated as a result of European discovery by Spanish‚ Portuguese and French explorers.(1‚2) Christopher
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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education CHEMISTRY Paper 1 Multiple Choice Additional Materials: Multiple Choice Answer Sheet Soft clean eraser Soft pencil (type B or HB is recommended) 0620/01 October/November 2008 45 Minutes *6400528663* READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples‚ paper clips‚ highlighters‚ glue or correction fluid. Write your name‚ Centre number and candidate number on the
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We know that technology plays an important role in fulfilling our daily needs. Basically‚ if we look around us‚ technology can be seen everywhere from a small pen to an air plane. From a day until late night technology is associated with our lives. A revolution of technology has made human life much easier. We can do our tasks much faster and in a much easier way‚ saving time. No one can imagine a life without technology. Imagine if airplane had not been invented‚ then traveling from one country
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The pursuit of knowledge carried on by scientists for the past several centuries has produced results over which opinion is sharply divided. Science‚ originally intended to conquer and harness the forces of nature for the good of man‚ is looked upon by some as the chief cause of the suffering of humanity today. On’the other hand‚ there are a good many people who consider science to be the harbinger of all progress‚ prosperity and comfort. The contro¬versy has been raging for a long time‚ though science
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3090 3090▌ SHORT REVIEW Reaction of Diazo Compounds with Organoboron Compounds short review Huan Li‚ Yan Zhang‚ Jianbo Wang* Reaction of Diazo Compounds with Organoboron Compounds Abstract: The transition-metal-free reactions of diazo compounds with organoboron compounds are reviewed. This type of reaction provides an alternative approach for the formation of C–C‚ C–B‚ and C–Si bonds. Moreover‚ by using tosylhydrazones as diazo compound precursors and boronic acids/esters as the
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Amoxicillin Amoxicillin is a penicillin antibiotic. It fights bacteria in your body. Amoxicillin is used to treat many different types of infections caused by bacteria‚ such as ear infections‚ bladder infections‚ pneumonia‚ gonorrhea‚ and E. coli or salmonella infection. Amoxicillin is also sometimes used together with another antibiotic called clarithromycin (Biaxin) to treat stomach ulcers caused by Helicobacter pylori infection. This combination is sometimes used with a stomach acid reducer
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Name__________________________ Chemistry 190: Organic Chemistry EXAM 3 Thursday April 21‚ 2011 1. (12) ______ 2. (14) ______ 3. (20) ______ 4. (12) ______ 5. (54) ______ 6. (16) ______ 7. (12) ______ 8. (10) ______ Total (150) ______ The exam consists of twelve numbered pages and an unnumbered cover sheet. Make certain that you have a complete exam. You will have two hours to work on the exam. No books or notes are allowed; however‚ you may use a molecular model set and a calculator
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contains four sections‚ SECTION A to SECTION D. Instructions: Answer all questions in SECTION A - SECTION D. Make sure that the section heading is included and your answers are correctly numbered. The assignment must have a completed cover sheet. It must be placed in the drop-box on or before the deadline. st SECTION A ELECTRONIC STRUCTURE & IONIZATION ENERGY 1. 2. Write the electronic structure in s‚p‚d notation of the following: O‚ Na‚ Na+‚ Al‚ Cl- and Co
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Math plays a vital role in our lives; we use it daily without even realizing it. For example‚ when we go to the store we make sure that we have enough money to pay for our things. See‚ this shows we use simple math every day. Many times‚ the question of “When are we going to use this in life?” has been asked. Many fail to realize it can help us make important life decisions and complete our everyday tasks. Math is very universal it is taught all throughout the country. It can help us to spend money
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