Purpose: The purpose of this experiment is to: determine the limiting reactant of a chemical reaction that involves iron filings and a copper sulfate solution. Second‚ to determine the mole ratios between iron and copper and to show that a single replacement reaction occurs when iron and copper sulfate react with each other. And lastly‚ to determine/calculate the percent yield to better analyze the chemical reaction between iron and copper sulfate to produce copper and iron sulfate. The method
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of oxygen that the body can consume‚ transfer‚ or employ during a given exercise is called VO2max. This indicates the physical well-being of an individual. However‚ a multitude of physiological functions limit a person’s endurance for exercise by limiting maximum oxygen consumption by the body (Katch et al.‚ 2011). VO2max is used to determine the fitness levels‚ not only in athletes‚ but also in patients with heart failure‚ and is therefore both a prognostic and diagnostic tool. It is measured as
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the addition of a few drops of concentrated sulfuric acid‚ which catalyzed the reaction. The percent yield is calculated to determine the effectiveness of the reaction in preparing the desired product (aspirin). The limiting reactant of the equation was salicylic acid. After the limiting reactant was determined‚ the theoretical yield of aspirin was calculated at approximately 1.97g. The actual yield was only around 0.67g‚ producing a percent yield of 34.3%. These results show that the methods used
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Chemistry 1: PROBLEM SET SY 2012/2013 CLASS #: _______________ NAME_________________________________________ SECTION: ______________________ Stoichiometry II - Mole Calculations/ Limiting and Excess Reagent – Lecture Notes 1. Given the balanced equation N2(g) + 3H2(g) 2NH3(g) How many moles of ammonia are produced when 0.60 mol of nitrogen reacts with hydrogen? 2. Given the equation: SiO2 + HF SiF4 + H2O a. Calculate the number of moles HF that would completely react with 2.5 moles of
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3rd 2nd 1st Diagram.3 Therefore‚ if direct labours are a limiting factor‚ maximise production of Special reserve‚ followed by Original reserve; reduce production of Basic reserve. b) Contribution per £1 direct materials Basic reserve Original reserve Special reserve £ £ £ Contribution Direct materials 0.4166 1.5443 1.676 Ranking 3rd 2nd 1st Diagram.4 Therefore‚ if direct materials are a limiting factor‚ maximise production of Special reserve‚ followed by Original
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DATE PERFORMED: NOVEMBER 14‚ 2012 CALORIMETRY INSTITUTE OF CHEMISTRY‚ COLLEGE OF SCIENCE UNIVERSITY OF THE PHILIPPINES‚ DILIMAN QUEZON CITY‚ PHILIPPINES RECEIVED NOVEMBER 20‚ 2012 INTRODUCTION Heat is a form of energy that can be passed from an object with high temperature to an object with low temperature. The heat required to change the temperature of a substance by 1 K is called heat capacity. A calorimeter is a device commonly used to measure the amount of heat that
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contained in a 69.5-g sample of this gas? A) 0.49 mol B) 2.04 mol C) 103.6 mol D) 34.5 mol E) 4.08 mol 5. How many atoms of hydrogen are present in 5.9 g of water? A) 2.0e23 B) 1.8e24 C) 7.1e24 D) 3.9e23 E) 0.65 6. The limiting reactant in a reaction A) is the reactant for which there is the least amount in grams. B) is the reactant which has the lowest coefficient in a balanced equation. C) is the reactant for which there is the most amount in grams. D) is the
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on prey populations of large ungulates. The four proposed hypotheses examined are the predation limiting hypothesis‚ the predation regulating hypothesis‚ the predator pit hypothesis‚ and the stable limit cycle hypothesis. There is much research literature that discusses how these hypotheses can be used to interpret various data sets obtained from field studies. It was concluded that the predation limiting hypothesis fit most study cases‚ but that more research is necessary to account for multiple predator
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(seasonal fruit & veg) Paragraph 2 - Providing choice: Convenience & access Paragraph 3 - Providing choice: Outsourcing work & price (positive-sum example) Paragraph 4 - Limiting Choice: Choice of local produce (British Apples) Paragraph 5 - Limiting Choice: Decline of independent retailer Paragraph 6 - Limiting Choice: Domination of suppliers - (zero-sum example) Conclusion : local versus national seen within a zero / positive sum game Outline the view that big supermarkets
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isolate the organic layer (isoamyl acetate)‚ anhydrous sodium sulfate was added to dry it. Based on the results and observation obtained‚ we were able to synthesize isoamyl acetate and we were able to solve for its percentage yield by determining the limiting reactant‚ and theoretical yield. Keywords: Extract‚ Fischer reaction‚ Isoamyl acetate‚ Reflux‚ Synthesis Introduction Esters are a compound formed from a carboxylic acid‚ RCOOH‚ and an alcohol‚ R’OH [1]. They are most commonly known as a substances
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