Provide a general discussion of the solubility/miscibility behavior observed in procedure A-D. For part A of the procedure we worked with the solubility of solid compounds in various solvents. The three solid compounds that were worked with during this procedure were benzophenone‚ malonic acid‚ and biphenyl. These three solids were then mixed with water (highly polar)‚ methyl alcohol (intermediately polar)‚ and hexanes (nonpolar). When benzophenone is mixed with water the results turned out to be insoluble
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HOW DOES THE SOLUBILITY OF POTASSIUM CHLORIDE (KCL) AND POTASSIUM IODIDE (KI) IN WATER VARY WITH TEMPERATURE? AIM To observe solubilities of KCl and KI with water at different temperatures To compare the two solubility curves and discuss what might vary the solubility of different ionic compounds. THE VARIABLES DEPENDENT VARIABLE Temperature INDEPENDENT VARIABLE Amount of solute (KCl‚ KI) CONSTANTS Amount of the solvent (water)‚ pressure APPARATUS 100G OF POTASSIUM CHLORIDE 100G
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APPLICATION OF THERMODYNAMICS THERMODYNAMIC OF GASES (ADIABATIC CHANGE) In thermodynamic of gases‚ we can study about the changes to the internal energy of gas and factors affecting the internal energy. Thermodynamic also involves work done and heat supplied or lost by a gas. THERMODYNAMICS The study of temperature‚ heat‚ and related macroscopic properties comprises the branch of physics. Thermodynamics deals with processes which cause energy changes (internal energy) as a result
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czyET 3200 – Engineering Thermodynamics Homework Assignment #6 Due June 15‚ 2013 @ 5:00 PM Problem 4.8 - A Home Heat Pump for Space Heating We wish to do a preliminary thermodynamic evaluation of a 1kW input power home heat pump system for space heating using refrigerant R134a. Consider the following system flow diagram Thus the heat pump system absorbs heat from the evaporator placed outside in order to pump heat into the air flowing through the insulated duct over the condenser section
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Thermodynamics-Enthalpy of Reaction and Hess’s Law Purpose To demonstrate the principle of Hess’s Law and to find the heat capacity of the coffee cup calorimeter using three different reactions. Data Tave = (46.4-45.2)/2 = 45.8 qwater = -(100g)(4.184)(46.56-45.8) = -318 J Ccal = 318J/(46.56-21.2) = -12.53J/g*C Tinitial = (27.1+23.8)/2 = 25.45 qrxn = -(100g)(4.18)(38.43-24.45)+(-12.53x12.98) =-5400J/.1mol(1J/1000kJ) = -54.0 kJ/mol Tinitial = (26.0-24.5)/2 qrxn =-(100g)(4
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Chapter 6 Introduction to thermodynamics Topics First law of thermodynamics. Definitions of internal energy and work done‚ leading to dU = dq + dw. Heat capacities‚ Cp = CV + R. Reversible and irreversible processes. Various types of expansion‚ isothermal‚ adiabatic. CV and Cp according to kinetic theory‚ monatomic gases‚ other gases. The meaning of temperature‚ empirical temperature scale‚ perfect gas scale‚ the second law of thermodynamics‚ thermodynamic temperature scale. So far‚ we have concentrated
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Mechanical and Aerospace Engineering Course: Thermodynamics – I (ME 131) Credit Hours: 3-0 Course Description: Thermodynamics-I is one of the engineering foundation courses. This course deals with work / energy and their interaction. It is designed to attain knowledge about laws of thermodynamics and their application in thermal engineering. This course provides a foundation for subsequent major engineering courses like Fluid Mechanics‚ Thermodynamics II‚ Heat and Mass Transfer and many more
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Mark powers Period 2 C physics March 17 Thermodynamics lab I. The purpose of this experiment is to keep a certain amount of water as hot as possible for as long as possible. We also get to use whatever materials we want as long as our product is or is smaller than 20cm. II. For my project I used Styrofoam‚ tinfoil‚ insulation‚ silicone‚ and a cork. I used the Styrofoam as a box to put
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Experiment 3: Solution Calorimetry: Thermodynamics of Potassium Nitrate II. Abstract A determination of thermodynamic variables of KNO3 is presented. KNO3 was heated and dissolved in varying volumes of distilled water. Upon dissolution‚ the KNO3 solution was removed from heat and the temperature was recorded once crystals formed. For each solution‚ ∆G the Ksp were found with the temperature and molarity values. ∆H and ∆S were found through the linearization of the data with
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We have criticized evolutionists for their lack of understanding of basic thermodynamic principles‚ and we have criticized creationists for their inadequate explanation of why thermodynamic considerations rule out any possibility of evolution. Now it is time for us to attempt to do what others have failed to do. This is no easy task. In engineering colleges‚ thermodynamics often turns out to be one of two "weed-out courses" that causes students to change majors. (The other is fluid mechanics.)
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