How does a catalyst in the form of a metal ion affect the rate of reaction in an iodide clock reaction with potassium peroxydisulphate ions? Background When peroxydisulfate ions (S2O82-) react with iodide ions (I-) in the presence of a starch indicator‚ they produce a dark blue solution. Reaction (1) S2O82- + 3I- I3- + 2 SO42- (peroxydisulfate ion) (iodide ion) (iodine ion) (sulfate ion) To determine the rate law for this reaction a series of changes
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Many advanced high school and college chemistry students perform an experiment known as the "iodine-clock" reaction‚ in which hydrogen peroxide reacts with iodide to form iodine‚ and the iodine subsequently reacts with thiosulfate ion until the thiosulfate has been consumed. At that point‚ the reaction solutions turn blue in the presence of starch. The experiment helps students understand the fundamentals of chemical kinetics --- the speeds at which reactions take place. 1. Activation Energy
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"Propeller Clock" Mechanically Scanned LED Clock Seven light emitting diodes spin‚ giving the illusion of numbers in the air An Overview: Top View Side View How this clock works: A motor spins the "propeller"‚ and a small microprocessor keeps track of time and changes the pattern on seven LEDs with exact timing to simulate a 7 by 30 array of LEDs. It is an illusion‚ but it works nicely. To build this clock‚ few things are needed‚ including: 1. Skill with motors and mechanical
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If I Stay by Gayle Forman‚ is an heart wrenching story about seventeen year old Mia and the power of her internal choices. The conflict being‚ Mia suffers a horrible car accident; resulting in her having a out of body experience. Mia witnesses the aftermath of the crash and events in the hospital. Mia shares detailed anecdotes about her family and her love story with a guitar player named Adam. Mia then has to make the decision whether to stay and live‚ or leave and die. As she battles emotionally
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business policy & strategy (MNG 4200) LECTURER: MR. HUGH TODD Case #1: apple inc. in 2008 Group members: GROUP LEADER: ANUSHKA RAMPERSAUD (10/0835/0704) FARZANA HAMID (10/0835/1056) DEVIKA RAJKISSOON (09/0835/0575) SADESH RAMDEEN (10/0835/0507) BRIJESHWAR ARJUN (10/0835/1062) CHEASHIVA SAMAROO (10/0835/0997) APPLE INC. IN 2008 CASE ANALYSIS Apple computer was introduced in 1976 by founders‚ Steven Jobs and Steven Wozniak. Apple Inc. was the producer
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Stylish Italian-designed furnishings and wooden floors make you feel at home.When you arrive from Tbilisi International Airport‚ 25 km away‚ you can leave your vehicle in our spacious‚complimentary car park. Drive for just 5 minutes and you’ll been in the City center. You can follow the scenic‚ meandering River Mtkvari to the ancient Iberian city of Mtskheta‚ 20 minutes away by car‚ for its 6th-century Jvari monastery. Within an hour‚ you can be tasting Georgian wines at Kakheti vineyards. You’ll
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CENTER on GLOBALIZATION‚ GOVERNANCE & COMPETITIVENESS The Apparel Global Value Chain ECONOMIC UPGRADING AND WORKFORCE DEVELOPMENT Karina Fernandez-Stark Stacey Frederick Gary Gereffi Contributing CGGC Researchers: Penny Bamber and Ghada Ahmed NOVEMBER 2011 The Apparel Global Value Chain: Economic Upgrading and Workforce Development “Skills for Upgrading: Workforce Development and Global Value Chains in Developing Countries” This research project examines workforce development
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Q3 Porter five forces model is a framework for industry analysis and business strategy development. It draws upon industrial organization economics to derive five forces that determine the competitive intensity and therefore attractiveness of a market. Porter’s five forces include -three forces from horizontal competition: the threat of substitute products or service‚ the threat of established rivals‚ and the threat of new entrants‚ and two forces from vertical competition: the bargaining power
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McDonald’s Logistical & Value Chain Strategies 1.0 Introduction McDonald’s is the world’s largest multinational restaurant chain that serves hamburger fast food. As one of the leading food service retailers‚ there are more than 32‚000 restaurants across the world serving more than 60 million people in more than 100 countries every day. Around 85% of the restaurants are run by franchises or affiliates. (McDonald’s History‚ 2010) 1.1 History In 1937‚ Dick and McDonald opened McDonalds Bar-B-Que
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Study of the Saudi Aramco Value Chain Study of the Saudi Aramco Value Chain October 2010 Company overview: The Saudi Arabian Oil Company (Saudi Aramco) is a government-owned entity (since 1988 fully government-owned) and the world’s largest oil company in terms of output and managed natural crude oil resources. The company specializes in the exploration‚ production and distribution of crude oil‚ petrochemicals and natural gas. Saudi Aramco was established 1933 when Saudi Arabia signed a concession
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