PPV‚ which is the abbreviated term for phenylenevinylene‚ has light emitting properties since it has a large conjugated system. This organic molecule is possible to be formed from dichloro-para-xylene which then reacts with methanol and thiolane. The nucleophile would be the thiolane. A good leaving group in this case would be chlorine. After thiolane attacks‚ it results with dithiolane-xylene. The second step is reaction with sodium hydroxide. The hydroxide it used for deprotonation upon the substituted
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Arturo Contreras T. Conner-Moore Chemistry I Honors 22 August‚ 2016 Why is a Soccer ball consider Chemistry? What is chemistry? The word “chemistry” dates back to 1590-1600‚ but it is debatable that either the Egyptians or Greeks were the first to introduce chemistry to the world. What society does know‚ it is that Antoine Lavoisier is known as the “Father of Chemistry.” Lavoisier was the first to document how he compiled and completed the first list of elements. He discovered and named the elements:
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p. 1 Megan Ly Chemistry 231L February 20‚ 2013 SOLUBILITY Purpose: To better comprehend solubility behavior by investigating the solubility of various substances in different solvents‚ looking at miscible and immiscible pairs of liquids‚ and observing the solubility of organic acids and bases. Reference:
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“The Case of Susan Shapiro” Susan’s Behaviour Susan is a Jewish girl who is brilliant but irate tempered‚ complaining and conclusive personality. Susan’s nature of expecting a predetermined behaviour from others‚ preconceived notions added to her conclusive attitude has become the cause of conflict in her personality. Susan is in ethical dilemma whether to leave the organization after she was confronted with - what she thinks as conflicting situations in the workplace. She jumps into conclusion
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| |Chemistry paper | | | | | | |Class: Ten |Roll No: |Subject: Chemistry | |Student’s
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Sugar (Sucrose)- C12H22O11 Vitamin C (Ascorbic Acid)- C6H8O6 Aspirin (Acetylsalicylic Acid)- C9H8O4 Common Name | Chemical Name | acetone | dimethyl ketone; 2-propanone (usually known as acetone) | acid potassium sulfate | potassium bisulfate - used in the conversion of tartrates to bitartrates in wine. | acid of sugar | oxalic acid – used in cleaning or bleaching‚ especially for the removal of rust (iron complexing agent) | ackey | nitric acid | alcali volatil | ammonium
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Preparation of food takes a lot of time. Even if the dish is only composed of fruits. A lot of dishes have vegetables in them. These can also be useful especially when preparing lots of different food at the same time. If you look at cooking websites they will suggest to use lemon water. In our experiment we will attempt to find out which is better at preserving the sliced‚ chopped‚ and or diced food. Since our experiments are limited by time and costs‚ we will stick to the simplest of the available
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Introduction Chromatography is a technique used to separate a mixture into its individual components. In this experiment‚ chromatography is done by using a thin layer chromatography (TLC) plate and filter paper. The word ‘chromatography’ itself means the separation of colours. However‚ nowadays‚ both coloured and colourless compound are used in chromatography by various methods. In chromatography‚ the separation process of mixture is mainly based upon the polarity and molecular weight of sample
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What you choose to do to your body is your own decision‚ but those around don’t have much of a choice. When you smoke a cigarette‚ the smoke floats around‚ being inhaled by everyone around you. There are nine main chemicals in cigarette smoke: Benzene (Petrol Additive) Formaldehyde (Embalming Fluid) Ammonia (Toilet Cleaner) Acetone (Nail Polish Remover) Tar Nicotine (Insecticide/Addictive drug) Carbon Monoxide (CO) (Car Exhaust Fumes) Arsenic (Rat Poison) Hydrogen Cyanide (Gas
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Exposure to Secondhand Smoke causes diseases and premature death in children and adults who do not smoke. 11. Secondhand smoke contains hundreds of chemicals known to be toxic or cancer causing. Name five of these chemicals. a. Formaldehyde b. Benzene c. Vinyl Chloride d. Arsenic Ammonia e. Hydrogen Cyanide 12. Workplace productivity was increased and absenteeism was decreased among nonsmokers compared to smokers. Facts and Figures 13. There are 600 ingredients in cigarettes. Here are a
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