Jarrett Sears Dr. Hummel Chem 121 2/7/13 A Chemical Reaction between Tin and Nitric Acid Introduction: Finding the products made from the components of tin metal and nitric acid is the ultimate objective of this lab; the formula of the products will be found in the CRC handbook thereafter. Procedure: First‚ obtain a clean crucible‚ and heat it under a Bunsen burner until it is as hot as possible‚ about 15 minutes within a fume hood unit. The Bunsen burner will be used under the fume
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Punished by Acid Several people from the third world become a victim of an acid attack. The victim’s life has changed tremendously‚ which is what the photographer shows with his world-known pictures. On Ebrahim Noroozi’s photoseries you see a mom named Somayeh and her daughter‚ Rana and what acid has done to their faces. Now they most stay by themselves and take care of themselves. It is hard for me to understand some people will walk up to you to pour acid on you. Somayeh looked like an average
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Properties of Acids and Bases Diagram: A B C D E F Bromothymol Blue Universal Indicator Phenolphthalein Litmus Paper Analyze: 1) F‚ C‚ D‚ B‚ A‚ E 2) D is neutral because it turned to the colour of green when it came in contact with the indicator Bromothymol Blue. The acid or base is green between 6.0-7.6 pH. 3) Solution E is more alkaline (more basic) than solution A because when E came into contact with the indicator Bromothymol Blue it turned
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The purpose of this experiment was to study the effect acid rain has on seed germination and after performing this experiment is can be concluded that acid rain has a negative effect on seed germination. When seeds are soaked in an acidic solution the process of germination slows. Acidic solutions‚ while do slow growth of a seed‚ they do not kill the seed. A seed can be dormant for a majority of its lifespan‚ seeds watered with acid solutions stayed in a dormant condition. For example‚ trial three
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physical activity and obesity among urban‚ rural and slum populations in north India”. Obese 9(5):400-408. 5. Micha‚ R. and Mozaffarian‚ D. (2008)‚ “Trans fatty acids: effects on cardio metabolic health and implications for policy. prostaglandins‚ leukotrienes and essential fatty acids”‚ 79: 147-152. 6. Dhir‚ S. (2009) “Regulation of trans fatty acids in partially hydrogenated”. Food journal 109(2):182-195. 7. Center for Science in the Public Interest‚ (2012) “Trans fat: On the way out” Available at:
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TEABAG EXTRACT AS AN ALTERNATIVE FOR INK An Investigatory Project Chapters 1- 3 Submitted by: Alfonso‚ Manuela Fairbanks Garcia‚ Tonica Paga Cho‚ Jung Hun Lat‚ Manuel Miguel Feliciano November 2013 Chapter I Introduction A. Background of the Study The group will conduct the study because the group noticed that teabag extract is dark in colour and it can be use to make ink‚ and also the group noticed that teabags are made from natural resources. Some kinds
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Harvard Business School 9-792-060 Rev. April 28‚ 1993 Acid Rain: The Southern Company (A) Early in 1992‚ managers at the Southern Company were reexamining their strategy for complying with the acid rain provisions of the 1990 amendments to the Clean Air Act. The Southern Company was a holding company; its operating units were electric utilities in Georgia‚ Alabama‚ Mississippi‚ and Florida. The largest Southern subsidiaries‚ Georgia Power and Alabama Power‚ provided most of the electricity
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to the appropriate significant figures. 15-1 Molarity Problems: (M = moles/ liter ) 1. What is the molar concentration of a 415 ml solution containing 0.745 moles of HCl? (A: 1.80 M HCl) 2. What is the molar concentration of an acetic acid (CH3COOH) solution containing 3.21 moles in 4.50 liters? (A: 0.713 M) 3. How many moles of KI are present in 125 ml of 0.500 M KI? (A: 0.0625 mol KI) 4. How many moles of ammonia (NH3) are present in .360 L of 2.13 M NH3 solution in water
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Exploring the acid content of Pepsi products Lab performed: February 27‚ 2012‚ March 12‚ 2012‚ and March 19‚ 2012 Purpose: The purpose of this experiment was to discover the unknown concentration of acid in six different Pepsi products; Pepsi‚ Diet Pepsi‚ Dr. Pepper‚ Diet Dr. Pepper‚ Pepsi Wild Cherry‚ and Pepsi Max. Titrations find the point at which equal moles of a known concentration react with equal moles of an unknown concentration giving the equivalence point. Also‚ the
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Therefore‚ the experiment was performed to conduct quality control analysis on two commercial products to determine the amount of acid or base active in these two products and then compare the results to those of the manufacture. This was done through the preparation of standardized acid solution and standardized base solution‚ and through titration. The purpose of titration was to determine the concentration levels of the commercial products being used.
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