NAME-FOSU-MENSAH EMMANUEL ID NUMBER-10372921 VITAMINS Vitamins are organic compounds which are needed in small quantities to sustain life. We get vitamins from food‚ because the human body either does not produce enough of them or none at all. An organic compound contains carbon. When an organism cannot produce enough of an organic chemical compound that it needs in tiny amounts‚ and has to get it from food‚ it is called a vitamin. Sometimes the compound is a vitamin for a human but not for
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the trans‚ trans-1‚4-diphenyl-1‚3-butadiene‚ which is formed by a Wittig reaction along with the cis‚ trans isomeric diene. The reaction is carried out in two steps. First the Wittig salt is obtained through a simple nucleophilic displacement of chloride ion by triphenylphosphine. When treated with base‚ the Wittig salt forms a ylide which is a carbanion that acts as a nucleophile and adds to the carbonyl group. In this experiment‚ cinnamaldehyde is used as the carbonyl compound and yields mainly the
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The Atacama Desert forms one of the major hyper-arid deserts of the world and it is known to be the driest place on Earth. The extreme aridity of the climate and unusual mineralogy of the regolith in the Atacama region is of considerable interest because of its value as an analogue to the Martian surface. The sedimentary succession in the Atacama Desert records deposition under an arid to semiarid climate from the late Jurassic (150Ma) to the present day (Hartley‚ 2005). Comparison with other long-lived
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Experiment #7: Acids‚ Bases and Salts Mabag‚ Viannery D.‚ Mangune‚ Paolo D. Chem 14.1‚ MAB1‚ Ms. Angelyn del Rosario March 8‚ 2010 I. Abstract The experiment allowed students to explore different electrolytes and classify them into acids‚ bases and salts by using different indicators or by measuring the pH levels of each. The experiment also helped students classify different substances through their conductivity properties. The preparation of a 1 M stock solution from NaOH pellets diluted to a
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Road salt‚ also called rock salt‚ is sodium chloride‚ chemically combined with NaCl. Na is the chemical abbreviation for sodium and Cl is the abbreviation for chloride. Table salt that we use is exactly the same chemical. The US Environmental Protection Agency has set limits on allowable levels of chloride in water but not sodium. In high concentrations both sodium and chloride can be harmful to aquatic organisms. Sodium is the primary concern for humans‚ as it can be harmful to people with high
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Robert Lawrence and Edmund Stephens‚ two graduate students of geology from Columbia University‚ organized the Saline Salt Company in 1974. Keeping in mind the fact that every 1‚000 grams of seawater contains approximately 35 grams of various salts‚ the two men pictured limitless wealth for themselves by extracting these salts. Common table salt comprises 27 grams out of each 35 grams and is easy to extract; so‚ the men decided to begin producing it. They picked New Iberia‚ Louisiana as the ideal
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Is salt really that bad? Sodium is an essential electrolyte found in salt. Sodium is a mineral that carries out vital functions for the body some of which include maintaining fluid balance‚ regulating blood volumes‚ nerve transmissions and hydration. Sodium is important in ensuring healthy heart functions and muscle contractions. Some individuals have a higher need for sodium as it can be depleted through exercise (via sweat). If sodium levels are lower than recommended it needs to be replaced
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effects of rock salt‚ which is used for melting snow in the winter time‚ works in a variety of ways. The main reason is to aid in melting of the snow making it easier for individuals to drive their vehicles and also the sidewalk for pedestrians. Overall‚ the rock salt used for melting snow‚ works but it have some pros and cons about it‚ but using it wisely should be the key to its success. Might grass growth be inhibited by salt? Introduction The usage of salt‚ (rock salt) is best used
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are void of fresh produce are often called “food deserts.” A food desert is described as a geographical area where fresh produce is hard to obtain‚ particularly for those who do not have access to transportation. Because many of the people who live in food deserts commonly have unreliable transportation‚ they are forced to shop at convenient stores or eat at nearby fast-food restaurants due to their limited mobility and other options. Food deserts in this sense can often be attributed to lack of
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PDF Ebook salt. by Nayyirah Waheed SALT. by: Nayyirah Waheed Download: EBOOK SALT. PDF Ebook salt. written by Nayyirah Waheed‚ published in 2013 is now available in our online library. Ebook salt. has been shelved for 94 as currently-reading book. This ebook salt. has very good average rating with 4.55 of 5. This ebook has been downloaded for 3‚454 times. Read and download now an original version of Ebook salt. by Nayyirah Waheed in PDF format from our library. Whatever the reason‚ you will gladly
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