contains four sections‚ SECTION A to SECTION D. Instructions: Answer all questions in SECTION A - SECTION D. Make sure that the section heading is included and your answers are correctly numbered. The assignment must have a completed cover sheet. It must be placed in the drop-box on or before the deadline. st SECTION A ELECTRONIC STRUCTURE & IONIZATION ENERGY 1. 2. Write the electronic structure in s‚p‚d notation of the following: O‚ Na‚ Na+‚ Al‚ Cl- and Co
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Comparing the enthalpy changes of combustion of different alcohols Aim In this experiment I will investigate the enthalpy changes of combustion. In particular I will be investigating the enthalpy change of combustion for different alcohols. I hope to investigate some of the homologous series alcohols‚ as well as a few structural isomers of these alcohols. Background & theory Enthalpy cannot be measured. What we can actually measure is the enthalpy change from the reactants to the products.
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Biomolecule BCH 3101 Thermodynamics of Biological Systems • Movement‚ growth‚ synthesis of biomolecules‚ and the transport of ions and molecules across membranes all requires energy. • All organisms acquire energy from their surroundings and utilize that energy efficiently to carry out life processes. • In order to study these bio-energetic phenomena we will require knowledge of thermodynamics. BCH3101 1 • Thermodynamics: defined as a collection of laws and principles describing the flows and
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Flow Section 8.1‚ pages 216-219 2. Measurement of Heat Flow Section 8.2‚ pages 219-222 3. Enthalpy Section 8.3‚ pages 222-223 4. Thermochemical Equations Sections 8.4‚ pages 223-226 Written Assignment 1. Principles of Heat Flow Packet‚ page 3‚ questions 1-10 2. Phase Changes Packet‚ page 4‚ questions 1-14 3. Measurement of Heat Flow Page 241‚ exercises # 2‚ 4‚ 6 *4. Enthalpy and Heat of Formation Page 242‚ exercise # 16‚ 20‚ 34; packet‚ page 7‚ questions 1-6 ; page 8‚ questions
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LAB OF ENTHALPY CHANGE IN COMBUSTION Objective: Determine the Enthalpy change of combustion ΔHc of three different alcohols. Methanol‚ Ethanol and Isopropilic acid. Procedure: 1. Fill the spirit micro burner with Ethanol and weight it 2. Pour 100 cm3 of water into the aluminum cup 3. Arrange the cup a short distance over the micro burner 4. Measure the temperature of water 5. When the temperature of the water has risen by 10°C‚ record the temperature. 6. Reweight
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06.03 Calorimetry: Lab Report Before You Begin: You may either copy and paste this document into a word processing program of your choice or print this page. Procedure: Part I: The Dissolving of Solid Sodium Hydroxide in Water Measure out approximately 205 mL of distilled water and pour it into the calorimeter. Stir carefully with a thermometer until a constant temperature is reached. Record the volume of water and the constant initial temperature of the water on your data table. Place
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Ice Calorimeter Determination with Mg June 18th 2013 Abstract: This experiment determines the amount of energy needed to melt ice. A spontaneous increase in enthalpy produce by combining 0.2036g Mg and 5.00mL H₂SO₄‚ ice was melted and readings were taken by using an ice calorimeter. Readings were taken before during and after the reaction were completed. The data taken shows a value of -405 KJ/mol while the theoretical value was -483.7 KJ/mol. Calculating the experimental
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and the enthalpy of the reaction. A calorimeter is an adiabatic system so it does not exchange matter and energy with its surrounding which means: qrxn=-qcal In the experiment the students did‚ the instrument they used to measure the heat capacity‚ the heat‚ and enthalpy of the reaction is the constant pressure calorimeter‚ wherein the students use a Styrofoam ball and a 6” test tube with a stopper and thermometer inside it. The equations used to determine the heat capacity‚ enthalpy‚ heat of
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Specific Heat Lab Report “Here are the facts we confront; No one is against conservation. No one is against alternative fuel sources.” – J. D. Hayworth Research Question: Does the number of hydrocarbons that a fuel is composed of affect how much it will ignite? If so‚ consider the following: What is the quantity and concentration of the combustion that is released and how can that be measured in other (more coherent) means? These are the fuels that were seasoned throughout the
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Reaction co-ordinate ?H is the heat content‚ which is the enthalpy‚ which is negative in exothermic reactions as the diagram shows that energy is ’lost’ as heat. Enthalpy is defined as the energy of reaction‚ or the heat energy associated with a chemical change. Chemical Principles By Master & Slowinski says that "For any reaction carried out directly at a constant pressure‚ the heat flow is exactly equal to the difference between enthalpy of products and that of the reactants"‚ or: Qp = Hp - Hr =
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