the sources of pollution which accompany the combustion of organic compounds and explain how these can be avoided. (6 marks) Carbon dioxide is produced by power plants and motor vehicles by complete combustion when there is plenty of oxygen supply. It is a major pollution of enhanced greenhouse effect. This can be avoided by using filters such as
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PURPOSE: The purpose of this lab is to familiarize ourselves with the techniques associated with separating a mixture of different solids. We will learn how the unique properties of substances can aid in this process and help us distinguish each pure substance from one another. DATA OBSERVATIONS CALCULATIONS CONCLUSION/DISCUSSION QUESTIONS A. How did your proposed Procedures or flow charts at the beginning of this experiment compare to the actual Procedures of this lab exercise? B. Discuss
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Organic Food vs Non Organic Food In today’s society you walk into a grocery store and you always have the option of organic or non organic food. There are even grocery stores dedicated to organic foods like Trader Joe’s‚ Sprouts and Whole Food market. I personally have gone organic and will never go back to eating or drinking non organic food. Organic food may be pricey but less hormones‚ less cow puss and blood in your milk‚ and less pesticides. The controversies about organic food vs non organic
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CHEMISTRY Guess Paper – 2013 Class – XI Subject - CHEMISTRY MAX MARKS=90 ……………………………………………………………………………………… General instructions: All questions are compulsory. Marks for each question are indicated against it. Questions number 1to 8 are very short –answer questions‚ carrying 1 mark each. Answer these in one word or about one sentence each. Questions number 9 to18 are short –answer questions‚ carrying 2 marks each. Answer these in about 30 words each. Questions number19 to27
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Nomenclature of Aromatic Compounds Aromatic Compounds- possess a ring shaped structure Benzene (C6H6)- aka. naphtha - unsaturated cyclic compound - simplest aromatic HC - all C to C bonds are identical; each C has a H atom - substitution reactions occur instead of addition reaction - delocalized pi bonding in benzene imparts stability (aromaticity); responsible for resistance to addition reactions (involve breaking delocalized bonding) Benzene Derivatives- produced when one or more H atoms on benzene
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Burning Money Chemistry Demonstration Principle You soak a note in ethanol (alcohol) and it will burn when lighted‚ leaving the note untouched. This is because alcohol is more flammable‚ and burning alcohol causes it to vaporize‚ along with the water present in the solution. This removes heat from the note and prevents it from reaching its combustion point. Materials Bill/Dollar bill (higher denomination if you’re brave) Tongs container Matches or a Lighter Salt (or one of these chemicals
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experimental techniques which can be used to tell us where the atoms are located in a molecule. Using advanced techniques‚ very complicated structures for proteins‚ enzymes‚ DNA‚ and RNA have been determined. Molecular geometry is associated with the chemistry of vision‚ smell and odors‚ taste‚ drug reactions and enzyme controlled reactions to name a few. Molecular geometry is associated with the specific orientation of bonding atoms. A careful analysis of electron distributions in orbitals will usually
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educator Friedrich Froebel designed‚ the organic unity of a Japanese building Wright saw at the Columbian Exposition in Chicago in 1893‚ and a Jeffersonian belief in individualism and populism. Always a believer in architecture as "natural" and "organic‚" Wright saw it as serving free individuals who have the right to move within a "free" space‚ envisioned as a nonsymmetrical design interacting spatially with its natural surroundings. He sought to develop an organic unity of planning‚ structure‚ materials
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Data and Observations: Complete a data table that includes a prediction of reaction type (single replacement‚ double replacement‚ synthesis‚ decomposition‚ or combustion)‚ observations‚ and identification of reaction type for each reaction in the lab. (10 points) Reactants Prediction of Reaction Type Observations Reaction Type Conclusion: 1. Write a balanced equation for each
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Organometallic preparation and addition to carbonyls‚ Wittig reagent preparation and Wittig rxn‚ Wolff‚ H-based nucleophile carbonyl reduction‚ imine formation‚ reductive amination (rxn only)‚ ketal/acetal formation‚ dithiane chemistry (rxn only)‚ alpha-bromination of ketones‚ -COOH properties (the trends on HW4)‚ Fischer‚ acidic/basic hydrolysis of esters/amides/nitriles‚ CH2N2‚ acid chloride formation (rxn only)‚ acid chloride rxns with esters and amides. 2 Rxn of carboxyllic acid derivatives
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