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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Examination of Water and Wastewater 5210 BIOCHEMICAL OXYGEN DEMAND (BOD)*#(1) 5220 CHEMICAL OXYGEN DEMAND (COD)*#(2) 5220 A. Introduction Chemical oxygen demand (COD) is defined as the amount of a specified oxidant that reacts with the sample under controlled conditions. The quantity of oxidant consumed is expressed in terms of its oxygen equivalence. Because of its unique chemical properties‚ the dichromate ion (Cr2O72–) is the specified oxidant in Methods Section 5220B‚ Section
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Diamond Chemicals PLC (A): The Merseyside Project Late one afternoon in January 2001‚ Frank Greystock told Lucy Morris‚ “No one seems satisfied with the analysis so far‚ but the suggested changes could kill the project. If solid projects like this can’t swim past the corporate piranhas‚ the company will never modernize.” Morris was plant manager of Diamond Chemicals’ Merseyside Works in Liverpool‚ England. Her controller‚ Frank Greystock‚ was discussing a capital project that she wanted to propose
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cameras and modified webcams (excellent examples of which can be seen at Damian Peach’s website and on the ESA site). Although modern technology has allowed much detail to be resolved and captured electronically‚ many observers prefer to record their observations of the planet with more traditional sketches and drawings made at the eyepiece‚ a time-consuming but rewarding experience (see for example a selection of sketches produced by observers at the Astronomy Sketch of the Day website). Apart from slight
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Sample Paper – 2012 Class – X Subject –Chemistry Chemical Equations and reactions Very Short Answer (1 marks each) Write the name and formula of compounds forms between a. Potassium and iodine ion .b.Sodium and sulphide ions . c. Aluminums and chloride ions 2. Why does milk sour when kept for a long time/ 3. What happen when hydrogen combine with oxygen in presence of electric current/ 4. Define electrolysis. 5. What is decomposition reaction? Give an
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chemically convert the substance into nutrients. It usually involves mechanical manipulation and chemical action. Mechanical Digestion What is it? This type of digestion involves the mixing‚ grinding or crushing of large pieces of food into smaller places. Why does it take place? So that the food we consume is broken down into smaller pieces before we swallow it which in turn makes process of chemical digestion that takes place later on more effective because it works more efficiently on
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Case 22: Victoria Chemicals The Merseyside Project Table of Contents Executive Summary 3 Problem Statement 3 Key Decision Criteria 4-5 Data Analysis 5-6 Alternatives Analysis 6-7 Recommendations 8 Action and Implementation Plan 8-9 Exhibits 10 References 11 Executive Summary Victoria Chemicals is a major competitor in the worldwide chemicals industry. They are a leading producer of polypropylene‚ which is a polymer used in products such as: medical products and carpet fibers.
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research completed using Naturalistic Observation based on the attentiveness of children. Any correspondence should be addressed to Pollyanna.craig@yahoo.com Dr. Lashley PSYCH 209 Section: 0956 Abstract Naturalistic Observation refers to collections of data without manipulation of the environment. The mean goal of naturalistic observation in Psychology is to study the behavior of an organism or human in natural settings. In psychology‚ naturalistic observation has been used in many different
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the rate of decomposition of hydrogen peroxide.” Chemical equilibrium is the state of constant composition attained when opposing reaction rates become equal. There is an essential relationship between reaction rates and chemical equilibrium‚ one that we can describe quantitatively. At first thought‚ the connection may seem obscure - do we not need to be far from equilibrium to properly measure reaction rates? The dynamic nature of chemical equilibrium means that both forward and reverse reactions
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Environmental Observations I was able to attend an Alcoholics Anonymous meeting at Calvary Lutheran Parish House in Dover‚ PA on a Sunday afternoon. The location was easy to find and close to my house. When I arrived‚ I noticed a group of people smoking near the building and walked over to them and inquired about if I had the right location of the meeting. A gentleman told me to go down the stairs and then I would be in the room that the meeting took place. I walked over to the steps and had to
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