Chemical Reactions Chemical Change • reorganization • original substances form new substances with different formulas • may or may not involve a change of state • symbols used to describe chemical reaction are known as a chemical equation • Chemical equations do not have equal signs (=) they have an arrow Chemical Equations • Must follow the Law of Conservation of Matter • atoms can neither be created or destroyed during a chemical reaction • What
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POLLUTION Assalamualaikum and very good morning to my beloved lecturer ‚Madam Asmad and my fellow friends. How are you today? Have you take your breakfast? I hope all of you in pink. Before I start my speech today. I want to tell to all of you that the reading level of air pollution today really worried today than 20 years before. Today I will share with all of you about pollution. We could say that pollution is the harm that results because of the presence of a substance or substances where
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Tro’s Chemistry Chapter 13 – Chemical Kinetics Page 1 of 13 Acknowledgements: Many of the images are adopted from Tro’s textbook‚ the only purpose of which is to enhance student learning. Key terms‚ concepts‚ skills: Refer to pp 599 – 601. Review questions: 3 – 24. Suggested problems: 25‚ 27‚ 33‚ 39‚ 43‚ 53‚ 57‚ 59‚ 69‚ 73‚ 75‚ 81‚ 93‚ 103. 13.1 & 2 Introduction to the Rate of a Chemical Reaction • kinetics is the study of the factors that affect the speed of a reaction and the mechanism by
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Diamond Chemicals PLC Executive Summary Diamond Chemicals is considering two mutually exclusive projects‚ the Merseyside project and the Rotterdam project‚ for the production of polypropylene When considering the Merseyside project‚ senior-management wants a positive impact on earnings per share. The addition to earnings per share was £28‚800 with an average addition of £2‚000 per year2. Calculated with erosion‚ the addition to earnings per share was £18‚800 with an average addition of £1
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Chemical equations are the symbolic representations of chemical reactions that are made up of reactants and products. It is made up of the chemical formulas of the reactants and the chemical formula of the products. The reactants are the substances or chemicals that takes part in during a reaction and the products are the chemicals are the substances that result from the chemical reaction. Reactants are on the left side of the chemical equation and the products are on the right side of the chemical
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management. When your body temp rises you autonomic nervous system causes you eccrine glands to secrete fluid onto the surface of the skin where it cools as it evaporates. Motor dysfunction_ All motor dysfunction means is abnormality in the use of the motor system‚ or where a muscle or nerve cannot control motion. Paresthesia_ this is know as the sensation of tickling‚ tingling‚ pricking‚ or burning of someone’s skin with no long term affect. The most common sensation is known as “pins and needles”
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: 70 General Instructions 1. All questions are compulsory. 2. Question nos. 1 to 8 are very short answer questions and carry 1 mark each. 3. Question nos. 9 to 18 are short answer questions and carry 2 marks each. 4. Question nos. 19 to 27 are also short answer questions and carry 3 marks each 5. Question nos. 28 to 30 are long answer questions and carry 5 marks each 6. Use log tables if necessary‚ use of calculators is not allowed. (1) Why is ferric chloride preferred over potassium chloride
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Theme : Electrical Sector and Chemical Engineer a) “The Chemical Engineer – His Role in Electrical Manufacturing” by N.R. Maleady The article is about the role of chemical engineer in manufacturing transformers in the electrical manufacturing sector. The important components of the transformer are copper wire‚ cellulosic insulation‚ insulating varnish and dielectric liquid. Wire enamel or resin is the insulting structure for copper wire. The resin can either applied as a solution or in solventless
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I am pleased to share my concerns‚ analysis and recommendation about the Merseyside Project with you. Your DCF analysis is excellent and helpful. However‚ I have to make some changes to it. The memo will be divided into 6 parts. Suggestions for Merseyside project: P1 What should change in the DCF analysis and why: P1-P3 Other important issues: P3-P4 Evaluation of each investment Criteria: P4-P5 Ultimate recommendation and forward looking: P5-P6 Revised DCF analysis: Appendix
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he terms “chemical accident” or “chemical incident” refer to an event resulting in the release of a substance or substances hazardous to human health and/or the environment in the short or long term. Such events include fires‚ explosions‚ leakages or releases of toxic or hazardous materials that can cause people illness‚ injury‚ disability or death. While chemical accidents may occur whenever toxic materials are stored‚ transported or used‚ the most severe accidents are industrial accidents‚ involving
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