C-O-C bond angle is 111o‚ slightly higher than the H-O-H bond angle in water because of the stronger electron repulsion between the bulky alkyl groups. Preparation of Ethers: 1. Preparation of symmetrical ethers from alcohols H2SO4 R O R + H2O 2ROH 2. Williamson Ether Synthesis R O Na - - + + + R’X R O R’ + NaX Ar O Na + RX Ar O R + NaX Involves a nucleophilic substitution reaction. Halide ion is displaced by the alkoxide or phenoxide ion. Gives best results when
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adopting new technologies and are using feed acidifiers for supplementing the diets of animals. The market value of propionic acid as a feed acidifier was the highest in 2012‚ and is projected to grow with the increasing demand for feed acidifiers in the livestock industry. The benefits of feed acidifiers are leading the market demand in the feed industry. The fumaric acid market is comparatively small and is projected to grow at a CAGR of 5.8% from 2013 to 2018. The feed acidifiers market is projected
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SCHOOL BASED ASSESSMENT RESEARCH PROJECT Caribbean History Caribbean Economy and Slavery Several West African Societies were well organized and quite prosperous before the coming of the Europeans. Since the time of the slave trade many theories point out that Africa is the cradle of civilization‚ it is the birth place of the human race. We should never believe the Eurocentric view that Africa was a dark continent inhabited by uncivilized savages pretending to be humans. False and negative
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Trans-Siberian Orchestra is a multi-orchestral rock band‚ that composes of many different instruments and musicians‚ such as a pianist‚ violinists‚ guitarists‚ and vocalists. TSO began in 1996‚ when Paul O’Neill‚ TSO’s manager‚ was given the opportunity to start his own rock band. His vision later transcended into the Trans-Siberian Orchestra. The rock opera played at their Richmond concert was titled “The Ghosts of Christmas Eve”‚ produced and written by Paul O’Neill. One piece they performed
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The Ci Wara crest or “mask” is a black wooden crest that is about 23 inches tall. The Bamana people in Mali‚ Western Sudan‚ wear this crest. The crests are sits on top of the head of the performer in a dance that involves women singing songs that praise the spirit Chiwara‚ the ideal farmer. The head and the body of the dancer are covered with a costume. The dancers imitate the leaps and bounds of the antelope while the young farmers in the community hoe the ground. This crest is displayed as a pair
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Trans-Galactic Tournament is arguably the best free-to-play MOBA in the Playstation 4. Not only is it free-to-play‚ but it provides tons of content to its dynamic player-base. Thanks to its fast-paced gameplay which deviates from the traditional MOBA format‚ it provides a refreshing experience guaranteeing adrenaline-fueled moments every second. Currently‚ the game features three game modes‚ 20 champions‚ dozens of customization options and power-ups‚ and hundreds of hours of pure entertainment.
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which both prove the erythro-2‚3-dibromo-3-phenylpropanoic. Determination of the Stereochemistry of 2‚3-dibromo-3-phenylpropanoic acid. Introduction The purpose of this experiment was to determine the mechanism of the reaction of trans-cinnamic acid with the addition of bromines to 2‚3-dibromo-3-phenylpropanoic acid. An addition of bromine was added to trans-cinnamic acid and it is necessary to determine whether the intermediates were syn or anti addition or a mixture of them both to find the stereochemistry
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concentrated sulphuric acid at the chemical plant where I work at as the Safety Engineer. In this report‚ I will explain what Sulfuric Acid is‚ the health risks and hazards associated with it‚ the safety precautions that should be taken and how the spill should be handled. Sulfuric Acid‚ H2SO4‚ also commonly known as battery acid or vitriol‚ is one of the top products in the chemical industry‚ with 40 million tons produced annually in the U.S. It is a colourless‚ odourless and oily mineral acid that is soluble
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The Economy of the Trans-Mississippi West‚ 1850-1900 During the mid-19th century and early 20th century‚ the promoters and government officials viewed the West as a land of opportunity and prosperity. However‚ people with economic and political power took advantages of westerners for their own benefits. As a result‚ the rich got richer and westerner suffered economy downfall. A few was benefited from railroads and federal land grants‚ while others faced several conflicts. In the end
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2008 A PROTEIN-APPENDED ROTAXANE BY HAYTHIM HASSANEIN SUPERVISOR PALL THORDARSON 2 Contents Certificate of Orignality .............................................................................................................. i Abstract ...................................................................................................................................... ii Acknowledgements .......................................................................................
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