Elisa Hofmeister Kokesh Hour 3 AP Chemistry 5-29-12 The Chemistry of Coffee Green Coffee- Before coffee is roasted‚ it is referred to as “green coffee”. The green coffee is primarily made up of caffeine‚ lipids‚ carbohydrates‚ proteins (amino acids)‚ and organic acids (although inorganic acids exist in coffee as well). These groups are quite stable in the green phase‚ and it is the carbohydrates‚ proteins‚ and acids that will undergo significant reactions during roasting to produce coffee
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Semester II Course Code and Title: CHEM1901 - INTRODUCTORY CHEMISTRY A Date: Duration: Time: 2 Hours. Paper No: 1 Materials required: Answer booklet: Calculator: (where applicable) Multiple Choice answer sheets: Programmable □ □ numerical □ Normal Special Not required □ Non Programmable □ 1-20 □ 1-100 □ alphabetical Auxiliary/Other material(s) – Please specify: CHEMISTRY ANSWER BOOKLET Candidates are permitted to bring the following
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In this article‚ Buffam discusses the potential risks that green roof runoff can have on downstream ecosystems. Though beneficial in some areas‚ storm water runoff from these roofs have been found to seep harmful chemicals that can contaminate water quality. Sources of phosphorous‚ carbon‚ copper and iron have all been identified as a part of the hazardous runoff. It has been anticipated that these green roof ecosystems have fluctuating runoff concentrations depending on plant production‚ microscopic
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Module 4: 10. Strong Bases: NaOH‚ KOH‚ Na2CO3‚ NaHCO3‚ Na3PO4‚ NaHPO4‚ Strong Acids: Fe(NO3)3‚ HCL‚ HNO3‚ Al(NO3)3‚ NiCl2‚ H2SO4 11. Acidic Neutral Basic NaCl KNO3 NaOH HC2H3O2 Na2CO3 NaC2H3O2 NaHCO3 Fe(NO3)3 NaNO3 Na3PO4 HCl MgSO4 KOH HNO3 Na2SO4 NaHPO4 CuSO4 NaNO2 CoCl2 Al(NO3)3 NiCl2 H2SO4 KCl NH4Cl 12. CuSO4 CuCO3.Cu(OH)2(s) + 2 H2SO4(aq) ----> 2 CuSO4(aq) + CO2(g) + 3 H2O(l) Na3PO4 Na3PO4 (aq) + 3H2O (l) --> H3PO4 (aq) + 3NaOH
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Experiment 9 : The effect of substrate concentration on enzyme activity Objective To find out the relationship between the substrate concentration and the rate of reaction by determining the number of bubbles produce Hydrogen peroxide (H2O2) is a by-product of biochemical metabolism. An accumulation of hydrogen peroxide can be deadly‚ so it has to be decomposed. One of the decomposing factors is an enzyme called Catalase. Catalase breaks hydrogen peroxide into water and oxygen. The chemical
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Properties of Different Bonds An ionic compound forms from a nonmetal and metal element. A covalent compound is formed by two non metal elements. A metallic compound is formed by two metal elements. Metallic compounds have generally high melting points‚ are loose and flexible with their electrons‚ conduct electricity well‚ and have low solubility in water. Ionic compounds are generally crystals‚ have a high melting point‚ and usually have high solubility in water and conduct electricity well when
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Name: _____________________________ Submit Worksheets for Credit Stereochemistry Workshop 1. Assign the marked asymmetric centers with R or S designations. 2. Rank each of the following sets of substituents (highest priority substituent = 1; lowest priority substituent = 4). Place the number in the blank below the substituent. (a) (b) 3. Determine the relationship between each of the following pairs of structures (enantiomers‚ diastereomers‚ constitutional isomers
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Green Manufacturing & ISO14000 -Abhishek.V -Ankit Puri -Venkatesh Kumar Green Manufacturing Disturbing? Disturbing? Disturbing? Introduction • Manufacturing plays a very strategic role in an organization‚ especially to build competitive advantage and improve performance. • With rapid changes in technology‚ customer needs and globalization‚ manufacturing itself is constantly transforming and evolving. Goals.. “To prevent pollution and save energy through the discovery and development of
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CHEMISTRY PROJECT INVESTIGATORY PROJECT ON: CAFFINE CONTENT OF TEA About caffeine: Caffeine is a naturally-occurring stimulant‚ found in several plants. Caffeine is water soluble‚ and is extracted into the brewed cup when preparing tea‚ coffee‚ or other caffeinated drinks. The most well-known plants containing caffeine are the tea plant‚ Camellia sinensis‚ coffee‚ yerba maté‚ and guayusa. Although tea is known to have a number of health benefits‚ heavy caffeine use is known to have unpleasant
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similar texture and taste‚ just like the artificial shark fin made of edible gelatin‚ in order to reduce the number of deaths of sharks because their shark fin have to make into food. Also‚ we suggest that Muji can motivate and sponsor some campaign about protecting the sharks from keeping getting kills. Moreover‚ Muji can promote another traditional food to replace the shark fin soup and educate the public that what serious situation the sharks are facing and remind the public practically the nutrition
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