Title: Surface Area vs. Rate of Reaction Research question: How can different temperatures affect the rate of reaction‚ when the reactant is in powder form? Hypothesis: If the temperature of the water is increased‚ the rate of reaction will also increase as the heat given off to the particles will increase leading to more movement and frequent collisions. Background information: Chemical reactions occur when two or more molecules interact with each other‚ but that can only occur when they
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\How to lead a healthy lifestyle A very good afternoon to our honorable Principal‚ Mr Hassan‚ amiable teachers‚ dear friends and the esteemed visitors today. I feel glory to have a chance of lifetime standing here to address a speech to all of you. Here‚ I would like to share my experiences cum opinions with you about “How to Lead a Healthy Lifestyle”. Do you all know that having a good custom in lifetime can foster from young? First and foremost‚ a balanced diet is important for the
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Experiment 7: A Study of Chemical Changes: Types of Chemical Reaction INTRODUCTION Chemical changes are results of chemical reactions. All chemical reactions involve a change in substance and a change in energy. They are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products. There are different types of chemical reaction classified into 4 general types‚ namely‚ Synthesis‚ Decomposition
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Interpretation of Data When looking at my results i can safely say that the change in HCl concentration does affect the rate of reaction with the Calcium carbonate pebbles. The relationship between the change in HCl and reaction rate can be seen in the graph and raw data table presented above. If you compare the lowest concentration with the highest concentration you’d be able to see that there is a very large contrast between their averages. The average gas production of 0.1M HCl was 0.00693 kPa/s
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Lab #5: Grignard Reaction – Synthesis of Triphenylmethanol John Kang Chem 152L Performed: 7/20/04 Date submitted: ________________ Lab Partners: Sang Lee‚ Vicky Lai TA: John Stanko Abstract: This experiment explored the synthesis of triphenylmethanol through the use of Grignard reagents. The percent yield of the product was 10% on a relatively humid day. The melting point was calculate to be 127.2oC with a literature value of 162oC. An IR spectrum of the product was taken and used
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over 1‚500 European employees to restructure a €1.2 billion business‚ leading to a profit increase of over 50% on a quarterly basis. The outstanding career success he had enjoyed over the last decade was largely built on his strong interpersonal skills and his ability to mobilise large groups of employees. Where could this criticism be coming from? Chalon knew he had to better understand this situation and to make some changes. “I need to address this before things get out of control and really damage
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Joe Ross Reaction Paper Adult Development PSY6300 Instructor: Pamela Smilo PhD June 27‚ 2010 Reaction Paper Our textbook The Journey of Adulthood by Barbara R. Bjorklund and Helen L. Bee is the study of adult development‚ and it follows the tenets of developmental psychology‚ the field of study that deals with the behavior‚ thoughts and emotions of individuals as they go through various parts of the life span. The field also
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1 Research Paper In January 2012 Freddie DabneyIII died by driving His Car into the James River. Authorities ruled that the cause of Death was suicide. The Suicide rate in Virginia has been continually rising. In 2011/2012 it was reported that the suicide rate reached an all time high at 13 Suicides in one year. This has been the highest number of suicides in Virginia for almost a decade. According to the States Medical Examiner
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There are many high-priority health issues otherwise known as Leading Health Indicators (LHIs) selected by the Healthy People initiative to improve the health of all Americans (U.S. Department of Health and Human Services [DHHS] (2017a). These LHIs encompass every aspect of a person’s life from pre-conception through old age along with actions that can be taken to help the Healthy People initiative attain their set goals. The public health topic that I have chosen to discuss is substance abuse in
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sulphuric acid which reduces the pH of water. The result of these reactions is increase in the solubility of heavy metals and consequently pollution of water resources. The Sarcheshmeh copper mine is one of the largest porphyry copper mines in the world which is located in south-eastern Iran. Chemical analysis of over than 600 water samples taken from streams and springs in the mining region and surrounding area of pit showed extensive changes in water quality and composition due to the passage of water
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