Kinetics 6.1 Rates of reaction 6.2 Collision theory 6 16.1 Rate Expression (AHL) 16.2 Reaction mechanism (AHL) 16.3 Activation energy (AHL) 6.1 Rates of reaction 6.1.1 Define the term rate of reaction. 6.1.2 Describe suitable experimental procedures for measuring rates of reactions. 6.1.3 Analyse data from rate experiments. © IBO 2007 Figure 601 An explosion is a quick reaction D ifferent chemical reactions occur at different rates (i.e. speeds). Some
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Dumb Cane (Dieffenbachia seguine) Stem Extract as a Rodenticide for Black Rats (Rattus rattus) PROPONENTS: Dolino‚ Alma Gubalane‚ Delsan Miquiabas‚ Cheryl Telen‚ Nikol IV- Einstein Mrs. Lalaine Biboso Research II Adviser ABSTRACT Black rats are pests and are dangerous to humans in several ways. These species are also famous for its role in spreading the dreaded bubonic plague that took billions of lives in the Middle Ages. To control them‚ chemical rodenticides are used but these chemicals
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What Was the Exact Cause Of The Great Depression? The United States Great Depression leads many people to believe different stories about what actually caused it. The Stock Market Crash in October of 1929 is often referred to as the beginning of the Great Depression‚ but did it actually cause it? The answer is that it was the spark that lit the flame of the Great Depression. The Great depression was a financial decline that started in 1929 and lasted through most of the 1930s. Its pinpoint was
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on Issues Facing English Society Early Modern England was a transitional society where old and new coexisted. The problems facing the English society and economy in the 16th and 17th centuries are due to a wide range of issues. Massive population growth‚ the reformation and war brought social divisions to the English society and negative impacts on the economy.Population growth was a problem with many different facets that had profound effects on both the society and the economy. Between 1540 and
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lesions and eczema. This study aims to determine the effectiveness of the sap of the pandakaki-puti leaves‚ when made into an ointment‚ on the wound healing of the rat. B. Objective The objectives of this study is o determine the effectiveness of the pandakaki-puti ointment on the wound healing of the rat and to compare the healing rates of the wound that is treated with the pandakaki-puti ointment with
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Cellular respiration is defined as an enzyme mediated process in which organic compounds such as glucose is broken down into simpler products with the release of energy (Duka‚ Diaz and Villa‚ 2009). It is a series of metabolic processes and oxidation-reduction reactions. Oxidation of substrates‚ such as glucose‚ is a fundamental part of cellular respiration (Mader‚ 2009). As a catabolic process‚ it may or may not require the presence of oxygen. The process that requires oxygen is called aerobic
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unemployment”‚ meaning that immigration does not contribute to the unemployment rate in the United States. Instead of immigrants occupying U.S jobs‚ leading to unemployment for American citizens‚ immigrants have actually been helping to sustain U.S jobs by purchasing American goods and services such as; food‚ clothing‚ cars‚ and houses‚ as well as starting their own businesses. Immigration also has no effect on the unemployment rate in the U.S because there is no competition between American citizens and
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Chlorophyll Extraction This easy science project shows simple and efficient method of chlorophyll extraction from a plant. This is only a demonstration of working method which can be refined and used for a full scale science project. Plants contain many pigments in different proportions. For flowering plants it’s mostly a combination of chlorophyll-A‚ chlorophyll-B‚ pheophytin and Carotenes. These pigments have shades of green‚ blue green‚ grayish‚ and yellow-orange. Their concentration is
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as well as helping them access other sources of information and direction. In this essay I will examine the prevalence of ADHD‚ its signs‚ symptoms and the challenge these pose to teachers. I will outline what research says about managing and teaching these children in today’s classrooms. What is ADHD? Numerous terms have been used to describe the disorder with the symptoms of ADHD. These include Minimal Brain Dysfunction (MBD)‚ Hyperkinetic reaction and Hyperkinesis. Throughout this essay I
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Sickle cell anemia was first discovered in the year of 1910. A young man by the name Walter Clement Noel from the island of Grenada‚ studied in Chicago. He went to Dr. James B. Herrick‚ whom was a cardiologist‚ with symptoms of anemia‚ who assigned Dr. Ernest Irons to the case. There Dr. Irons noticed that Noel’s red blood cells were the shape of a sickle. Although sickle cell anemia has occurred in Africa for thousands of years‚ Dr. Herrick was the first to provide a formal description of sickle
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