"In 1897‚ Felix Hoffmann created a new industry. He found a way of adding a cluster of two extra carbon and five extra hydrogen atoms to a substance extracted from willow bark. The result is known to chemists as acetylsalicylic acid. To everyone else it is known as aspirin. It turned Bayer‚ the dye-maker Hoffmann worked for‚ into the world’s first modern drug company." Geoffrey Carr‚ The Alchemists‚ The Economist - Feb 19th 1998 Today’s Pharmaceutical Industry is characterized by several important
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Lewis Acids and BasesLewis acids and bases play an important role in chemical reactions because‚ except oxidation-reduction reactions‚ almost every reaction could be categorized as an acid-base reaction. Bases in water solutions show certain specific characteristics: bitter taste‚ feel slippery‚ and turn litmus paper blue. Acids in water solutions show these most common characteristics: sour taste‚ react with metals‚ and turn litmus paper red. The understanding of chemical reactions‚ such as acid
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In 1804‚ two men‚ Meriwether Lewis and William Clark were sent out by President Thomas Jefferson to explore the land of the Louisiana Purchase. The two men were to determine if the new territory actually had something that could contribute to America‚ or if there was nothing new or of importance. They were told to study the plant life‚ animals‚ and the geography of the region‚ to map out the borders of the land. In addition‚ they were to discover if the area had any natural resources which could
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proposal to finance for a mapping and scientific expedition to the far Northwest‚ beyond the Mississippi‚ which was foreign territory. In May‚ 1804‚ Jefferson assigned as commanders‚ Meriwether Lewis his personal secretary and William Clark‚ to set out on an amazing expedition across the Louisiana Territory. Lewis and Clark succeeded in many areas: Opened the U.S. from the Missouri River north to the Pacific Ocean‚ mapped and described the areas in detail‚ discovered many previously unknown species of
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Tuesday evening Michael ‚and his friend Lewis we’re out at a new busy burger restaurant in New York that had the best juicy burgers. Michael was six foot two‚with brown hair‚ and green eyes‚ and lewis was six foot five with‚ brown hair‚and brown eyes. Michael order a number 12 with cheese‚ and Lewis was the kind of person who would get salad at a burger place‚ but get a burger at a salad place. This is when three Guys and their girlfriends walked in Lewis stared down one of the other man’s girlfriend
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The poem‚ “Jabberwocky” written by Lewis Carroll is known as “one of his most famous‚ and included made up words that have slipped their way into English dictionaries (Shaw‚ 2004).” The poem is about a father and his son‚ and the father warns the son of an evil beast called the Jabberwock that is living in the “tulgey wood (Kirszner & Mandell‚ 2012‚ p. 629).” The son is curious of this evil beast that his father is talking about‚ and embarks on an adventure to find the Jabberwock. In my opinion
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C.S. Lewis According to author‚ scholar‚ and Christian apologist C.S. Lewis‚ “The task of the modern educator is not to cut down jungles‚ but to irrigate deserts” (this is what Lewis said when he wrote The Abolition of a Man). By this‚ he says a teacher should not change what his students know‚ but guide them in areas of weakness. He learned this technique throughout his life. **SEGWAY** As a child‚ Lewis was a Christian. Then he became an atheist at the age of 15 because he lost his way and was
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Pacific Ocean . During the trip‚ we found a land called Spirit Mound 6 miles north of the river. Lewis and Clark took several men and hiked a few hours north of the river. Their goal was to investigate an isolated hill on the prairie rumored to be inhabited by fierce spirit people who were 18 inches tall. They had remarkably large heads and could through shafts across a great distance to kill. Lewis and Clark took several men and hiked a few hours to get there The land also had
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Have you ever been in a group and did the majority of the work but never really got recognized? If that’s the case I bet you probably feel like Lewis Latimer. With that being the case I can also bet you never heard of Lewis Latimer. Lewis Latimer was an inventor and engineer‚ also a very important person that played a key role in inventing the light bulb. Lewis Latimer born in Chelsea‚ Massachusetts on September 4‚ 1848. He died in Flushing‚ Queens‚ New York‚ on December 11‚ 1928. Latimer was born
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Lewis Structure Review How To Write Lewis Structures 1. Determine the total number of valence electrons from all of the atoms in the molecule or ion. • Add one electron for each unit of negative charge. • Subtract one electron for each positive charge. 2. Write the correct skeletal structure. • For molecules of the formula ABn‚ place the least electronegative element in the center‚ and the more electronegative elements in the terminal positions. • H is always a terminal atom‚ and NEVER a central
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