Lecture No. 1 Chemical Kinetics 1.1 The Rate of a Reaction Chemical Kinetics is the area of Chemistry that is concerned with the speed‚ rate or mechanism at which a chemical reaction occurs. Reaction Rate is the change in the concentration of a reactant or product with time (i.e. M/s). It measures how fast a reactant is consumed and how fast a product is formed. 1.2 WRITING RATE EXPRESSIONS Consider the following hypothetical reaction. A + 2B ( 3C + D Rate = - rate
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POLLUTION FROM DIESEL ENGINES AND ITS CONTROL Diesel engines and gasoline engines are the most widely used primary sources of power in automobiles and the sheer number of them makes the issue of emissions from these engines an important one. Table 1 gives a comparison of the amounts of different pollutants in the exhaust of diesel and petrol engines. FORMATION OF NOX AND CONTROL METHODS: The main source of NOx in diesel engine emissions is the oxidation of the nitrogen in the air at the high temperatures
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1. “The energy for life comes from the sun.” Outline the role of the photosynthesis process to explain what is meant by this statement. (3 marks) chlorophyll 6CO2(g) + 6H2O(l) + energy C6 H12 O6 (aq) + 6O2(g) 2830 kJ glucose Photosynthesis is the process in which plants use the sun’s light energy to convert carbon dioxide and water into carbohydrates such as glucose‚ sucrose‚ starch and cellulose. Carbohydrates are high energy
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Enzyme Lab Introduction/ Abstract An enzyme is a substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction. They are mainly made up of proteins and can tremendously speed up reactions. E. coli ( a bacterium) has about 1‚000 different types of enzymes floating around in its cytoplasm at any given time. Enzymes can be used to join and even break up molecules as shown in the diagram below. (1)
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Module 3: Kinetics of Chemical Reactions Introduction to Kinetics Chemical thermodynamics has answered the question “can a specified chemical reaction take place?” (i.e. is the reaction thermodynamically favourable?). • However‚ chemical thermodynamics hasn‟t answered the question “HOW FAST will a specified chemical reaction occur?” o Many thermodynamically favourable reactions are so slow (ex: metamorphic transformation of rocks‚ corrosion of marble sculptures owing to weathering) that they can
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STRATEGIC MARKETING MASTER ERICK SUÁREZ DOMINGUEZ Chapter 1: An Introduction to Strategic Marketing Management The Changing Role of Marketing THE CLASSICAL YEARS (1910 -1950) l Development of new concepts and issues (e.g.‚ product differentiation‚ and issues in advertising‚ pricing and distribution) l The strategic objective: budgeting and control. Chapter 1: An Introduction to Strategic Marketing Management The Changing Role of Marketing THE MANAGERIAL YEARS (1951-69)
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The Secret River Part 2 Thornhill‚ Sal and Willie embark and Richard is born on the way to Sydney. On the Sydney harbour‚ Thornhill finds and works for Mr King.He also steals rum from him so he can sell some at Sal’s store. This makes a little more money for the family. He then works for Blackwood and takes cargo from Sydney to the Hawkesbury. They also live with Scabby Bill‚ who is an alcoholic‚ in a wattle and daub hut which they always complain about. The next child to be born is Johnny nicknamed
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atmosphere. Here‚ violence works as a precursor for actions that are even more alarming. Because America is going through the Great Depression‚ life is not always humane and neither are the people living through it. In Of Mice and Men violence serves as a catalyst for all of the important events in the novel. While Lennie and George are in Weed‚ Lennie feels a girl’s dress and will not let go causing Lennie and George to leave Weed and travel to Soledad where the important events of the novel occur. When Lennie
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Purpose: To find how pH and temperature levels affect the enzyme Background: Enzymes are a type of protein vital to sustaining life‚ it works with vitamins and minerals as a biological catalyst‚ which lowers the activation energy for a reaction to occur. Each individual type of enzyme does a specific job‚ and they do not die‚ they are reused. For example‚ catalase is an enzyme found in almost all living cells that will break down hydrogen peroxide and turn it into water and oxygen. The
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Asimov On Chemistry by Isaac Asimov The Book Asimov on Chemistry by Isaac Asimov is a collection of seventeen essays that he wrote for The Magazine of Fantasy and Science Fiction. This book is one of ten that were published by Doubleday & Company‚ Inc. Not all of the books centered on chemistry and like science. Most just covered anything Isaac Asimov wondered about. These Essays date back quite aways with a range from January 1959 to April 1966. INORGANIC CHEMISTRY The Weighting Game This
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