b) 9.00 L c) 3.00 L d) 2.25 L e) 27.0 L 4. [ 12 pts ] The heat required to raise the temperature of 55.85 g of iron by 1°C is called its a) entropy. b) specific heat. c) heat of fusion. d) heat of vaporization. e) molar heat capacity. 5. [ 12 pts ] Which of the following gases will have the slowest rate of effusion at constant temperature? a) CF4 b) F2 c) H2 d) Ne e) SO3 6. [ 12 pts ] All of the following statements are true for an exothermic reaction
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Maddie Sanchez 5-13-13 Period 5 I. Title: Titration Lab II. Purpose: To determine the concentration of an acid or a base exactly by neutralizing the acid or base with an acid or base concentration. III. Materials: The materials needed are a burette‚ boat dish‚ soap‚ beaker‚ ring stand‚ clamp‚ funnel‚ phenolphthalein (indicator)‚ scale‚ 250 mL flask‚ distilled water‚ stirrer‚ acid‚ and base. IV. Procedure: This lab was done in two days. On day one the first thing
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Aims To investigate the effect of varying the concentration of H2O2 has on the reaction‚ and to determine the respective order of reaction. To investigate the effect of varying the concentration of KI has on the reaction‚ and to determine the respective order of reaction. To investigate the effect of varying the temperature has on the reaction‚ and to determine the respective order of reaction. To investigate the effect of introducing Ammonium Molybdate to the reaction Arrhenius stuff
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or mol/L (M = Molarity) Primary standard and its importance can be justified by its accuracy to find the concentration of a solution‚ in this lab report; we will measure the concentration of NaOH and test our titration method as well as work with molar mass calculations. This will lead us to the “Standardization” a process where a solution’s concentration is determined accurately by titrating against the primary standard. Most importantly this experiment will enable us to test this system‚ and achieve
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particle. * Enthalpy Change (ΔH) is the heat energy transferred in a reaction at constant pressure. The units of ΔH are in kJ mol-1. All chemical reactions have enthalpy changes. * The reactions can be exothermic or endothermic. Exothermic reactions give out energy‚ and thus the ΔH is negative. Endothermic reactions absorb energy‚ thus ΔH is positive. Combustion is exothermic and thermal decomposition is endothermic. * Enthalpy changes can be calculated using average bond enthalpies. To break
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description of an experimental determination of the enthalpy of reaction of sulfuric acid in a reaction with magnesium to produce magnesium sulfate. Through the use of an ice calorimeter‚ the rxn H° D for this reaction is determined to be 1 360kJ mol − − × . Introduction: This report details an experiment in thermochemistry. Included are the methods‚ results‚ and interpretation of results of an experimental determination of an enthalpy of reaction. The reaction being studied is between sulfuric
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The goal of this experiment is to determine the enthalpy of combustion of naphthalene by means of a bomb calorimeter. First‚ the bomb calorimeter was standardized using benzoic acid and the average heat capacity of the bomb calorimeter was calculated to be 10.60.3205 kJ/K. From that‚ the These results show that heats of combustions of unknown substances can be determined via bomb calorimetry. Introduction The first law of thermodynamics states that energy is conserved.2 Using that law it can
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[PARVATIBAI CHOWGULE COLLEGE(H.S.S)-MARGAO-GOA] Chemistry chart Std-XII Name______________________________________________ Class____________________________________ Div__________________ Roll No___________ Batch No_______ 1 [PARVATIBAI CHOWGULE COLLEGE(H.S.S)-MARGAO-GOA] Chemistry chart Std-XII VOLUMETRIC ANALYSIS REDOX TITRATIONS Experiment No:- 1 Date:--------------- Aim:- You are provided with two solutions as follows. Container A: -----------------M/N Stock Solution of Hydrated
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triglycerides. Commonly‚ the acid H2SO4 is the catalyst on the first step of this process. It must be said‚ however‚ that major drawbacks such as substantial reactor corrosion and the great generation of wastes‚ including the salts formed due to neutralization of the mineral acid‚ are negative and virtually unsurmountable aspects of this protocol. In this paper‚ tin(II) chloride dihydrate (SnCl2·2H2O)‚ an inexpensive Lewis acid‚ was evaluated as catalyst on the ethanolysis of oleic acid‚ which is
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AP Chemistry Chapter 13 Outline Condensed phases: the liquid and solid phases; phases in which particles interact strongly. 13.1 Gas condensed when cooled and compressed. In the liquid state the forces of attraction among particles are great enough that disordered clustering occurs. It is hard to compress a liquid. Liquids diffuse into other liquids with which they are misicible. The natural diffusion rate is slow at normal temperatures. Cooling a liquid lowers its molecular kinetic energy
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