Editor’s Note: This occasional series of articles looks at the vital things in our lives and the chemistry they are made of. You are what you eat. But do you recall munching some molybdenum or snacking on selenium? Some 60 chemical elements are found in the body‚ but what all of them are doing there is still unknown. Roughly 96 percent of the mass of the human body is made up of just four elements: oxygen‚ carbon‚ hydrogen and nitrogen‚ with a lot of that in the form of water. The remaining
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A carbohydrate is an organic compound that consists only of carbon‚ hydrogen‚ and oxygen‚ usually with a hydrogen:oxygen atom ratio of 2:1 (as in water); in other words‚ with the empirical formula Cm(H2O)n. The carbohydrates (saccharides) are divided into four chemical groupings: monosaccharides‚ disaccharides‚ oligosaccharides‚ and polysaccharides. In general‚ the monosaccharides and disaccharides‚ which are smaller (lower molecular weight) carbohydrates‚ are commonly referred to as sugars.
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Farming better than Organic Farming? Name: Molly Sexton School: City of London Academy Centre Number: 10877 Candidate Number: 8145 Contents Page Page 1- Title Page Page 3- Introduction Page 4 – Is Organic better than Intensive? Page 5- Is Intensive better than Organic? Introduction In this case study I will be looking at weather “Intensive Farming” is better that “Organic Farming” i will look
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Sustainability and Organic Foods People nowadays are getting into the “go green” lifestyle while others continue to live without thinking about the effects they have on the environment. Why do people go green? It can save you money‚ it is the right thing to do‚ it is healthier because there are less toxins and less illness‚ it is helping future generations‚ and it is a chance to connect with the local community and spread the word. To go along with this lifestyle and its benefits‚ catering companies
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Dissolve the solid in exactly 4 mL tert-butyl methyl ether of. Add exactly 2 mL of water‚ cap the tube and shake. Let the mixture stand until two layers are formed. Remove the aqueous layer. Wash the organic layer two more times with exactly 2 mL of water (each time). After the final wash‚ dry the organic layer with calcium chloride pellets. Remove the ether with a pipette and filter through a funnel plugged with cotton into a pre-weighed 50 mL beaker including a boiling chip. Wash the pellets with
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Chemistry 3373F Lab Manual 2008 Modified 11/07 Table of Contents Chem 3373 Laboratory Schedule for Fall 2008.............................................................................2 The Benzoin Condensation of Benzaldehyde ..............................................................................3 Synthesis of Dilantin and Related Compounds (two weeks).........................................................6 Synthesis of an Alkaloid: Pseudopelletierine (two weeks) .............
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Department of Chemistry Extraction and Sublimation Experiment #4 10/02/13 Introduction Caffeine is a stimulant found in tea‚ coffee‚ cocoa‚ OTC medication‚ and cola drinks.It stimulates the brain and the central nervous system‚ so that a person feels less tired and more alert. The purpose of this lab is to determine the amount of caffeine in tea. The major component of tea is cellulose which is a polymer of glucose. Materials Lab coat Goggles Graduated cylinder 1 tea
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IMITATION VANILLA ESSENCE Vanillin may be removed from imitation vanilla essence by mixing it with an organic solvent such as dichloromethane and then mixing the vanillin molecule with dilute sodium hydroxide to make it into a sodium salt so that it is in its aqueous phase (Southam‚ 2013). This is done as in the first step the pure vanillin is attracted to the dichloromethane as they are both organic structures and have similar intermolecular forces (dispersion). The second step involves mixing it with
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It was period of my undergraduate study at Mumbai University‚ during which I developed an acumen towards chemistry and chemical science. The orientation before practical session increases my eagerness about chemistry to the zenith of my learning. At that moment I decided to pursue my career in chemistry and grab every opportunity where I can enhance my learning of the subject and deepen my conceptual knowledge of the subject. The sole reason for this alacrity‚ I would attribute to my undergraduate
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CHEM/ENCH 212 EXPERIMENT II: KINETICS OF NUCLEOPHILIC SUBSTITUTION DATE OF SUBMISSION: Table of Contents Experimental Table : Hazardous properties of chemicals used in the experiment.[1] Acetone Irritant. Do not inhale vapors. Highly flammable. 2 chloro‚ 2 methyl propane Flammable. Equipment 1. Conductivity probe 2. Constant temperature water circulation bath 3. Stir-plate with stirring magnets
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