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    Photochemical Smog

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    Chemistry Assignment Name : Lorna Ng Xin Mei Student ID : 1000620 Group Members’ Name: Sim Koshin Chen Chui Ting Bhindia Pooja Rayel Title : Paper Chromatography Photochemical Smog Lecturer’s Name : Ms. Usha Nanthini Table of Content No. | Content | page | 1. | Paper Chromatography | | | 1.1 Definition | | | 1.2 Background | | | 1.3 Rf Values | | | 1.4 Principles of Paper Chromatography | | | 1.5 Procedure

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    Micromotor Fabrication

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    surface micromachining forms the basis of the micromotor fabrication process. In this process‚ LPCVD heavily phosphorus-doped polysilicon is used for the structural parts. LPCVD silicon nik d e is used for electrical isolation‚ and CVD low-temperature oxide is used as the sacrificial material. The fabrication process impacts the performance characteristics of the micromotor through the reproduction accuracy of the design geometry and through the modification of the characteristics of contacting surfaces

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    control the air pollution • The automobiles must be designed with emission control system • The wastes must be removed and recycled in the industrial plants and refineries • Plants like pinus and ribes need to be planted to metabolize the nitrogen oxides and other pollutants • Timely servicing of the car helps to keep it in a good condition‚ and also minimizes fuel exhaustion • Using public transportation helps to prevent the air pollution • Using alternative energy sources like solar energy‚ hydroelectric

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    Chemical Reactions and Equations Chemical Reaction: The transformation of chemical substance into another chemical substance is known as Chemical Reaction. For example: rusting of iron‚ setting of milk into curd‚ digestion of food‚ respiration‚ etc. In chemical reaction new substance is formed which is completely different in properties from the original substance‚ so in a chemical reaction chemical change takes place. Following are the signs of chemical reaction: (a) Change of state of substance

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    Chemistry

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    ical Chemistry 1.which of the following pairs of compound will react? iC3H6+Br2 iiC3H6+Cl2 in sunlight iiiC3H6+H2O in the presence of sulphuric acid ivC3H6+H2O in the presence of concentrated sulphuric acid a.i b.i‚iii c.i‚ii‚iii d.all 2.liqiud y reacts with magnesium metal to produce a gas that burns with a pop sound when a flaming wooden splint is placed near it.liqiud y is most likely a compound that has the formula a.c2h5oh b.hcooh c.h3cooch3 d.c6h14 3.a compound p has the

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    Air Pollution Summary 7

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    recovered as fuel for boilers and kilns. There are many different chemical substances emit by industrial activities that contribute to air pollution. These chemicals come from a variety of sources. Among the many types of air pollutants are nitrogen oxides‚ carbon monoxides‚ and organic compounds that can evaporate and enter the atmosphere. Air pollutants have sources that are both natural and human. Now‚ humans contribute substantially more to the air pollution problem. The effects of air pollution

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    IGCSE Chemistry Notes

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    IGCSE Complete Chemistry Notes Unit 1: States of matter Everything is made of particles. Particles in solid are not free to move around. Liquids and gases can. As particles move they collide with each other and bounce off in all directions. This is called random motion. In 2 substances‚ when mixed‚ particles bounce off in all directions when they collide. This mixing process is called diffusion. It’s also the movement of particles without a force. The smallest particle

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    Laughter

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    Laughter: The Best Medicine Laughter reduces pain‚ increases job performance‚ connects people emotionally‚ and improves the flow of oxygen to the heart and brain. By Hara Estroff Marano‚ published on April 05‚ 2005 - last reviewed on June 21‚ 2005 Laughter‚ it’s said‚ is the best medicine. And there’s lots of evidence that laughter does lots of good things for us. It reduces pain and allows us to tolerate discomfort. It reduces blood sugar levels‚ increasing glucose tolerance in diabetics and nondiabetics

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    MATH

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    classification of pollutants under the traditional policy field Air Pollution: the acidification of soil and water by pollutants such as sulphur oxides‚ nitrogen oxides and ammonia; the damage to buildings sensitive to the same acidifying substances; the formation of tropospheric ozone from so-called ozone precursors‚ e.g. volatile organic compounds‚ nitrogen oxides and carbon monoxide which indirectly affect human and animal health and vegetation; direct effects on human health and ecosystems e.g.

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    Pollution on the High Seas

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    which releases more sulfur dioxide than all of the world’s cars‚ trucks and buses combined. The most cost effective and simplest solution to this problem is to have shipping companies start using altered bunker fuel which will reduce the nitrogen-oxide emissions effectively reducing air pollution and having the quickest positive impact on the environment. It has been proven that companies that have developed a Corporate Social Responsibility program are more profitable than those who don’t have

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