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Thermochemistry Lab #2 - Heat of Reaction - Hess’s Law Return The foundation of the study of thermochemistry was laid by the chemist Germain Hess‚ who investigated heat in chemical reactions during the last century. One statement of the law that bears Hess’s name says: The enthalpy change for any reaction depends on the products and reactants and is independent of the pathway or the number of steps between the reactant and product. In this experiment‚ you will measure and compare
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The Islamic University of Gaza Faculty of Engineering Department of Electrical and Computer Engineering Final Exam Electrical Machines (EELE 3351) Time: 2 Hours Student’s Name Student’s Number Grade Problem # Grade Problem 1 20 Problem 2 20 Problem 3 20 Problem 4 Student Grade 20 Good Luck Dr. Assad Abu-Jasser Tuesday May 27‚ 2008 All kinds of calculators are allowed 1. The coil on the magnetic core shown has 500 turns. The core
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Purpose: In this lab‚ we will heat up a metal rod and measure how much it expands. We will calculate its Coefficient of Linear Expansion‚ α‚ and prove the formula for thermal expansion‚ ΔL = αLiΔT. Also‚ we heat up a known volume of methyl alcohol and calculate its Coefficient of Volume Expansion‚ β‚ and prove the formula for volume expansion of a liquid ΔV = βViΔT. Equipment: Hollow Metal Rods of different metals‚ Steam Generator‚ Stand‚ Burner‚ Flexible Hoses‚ Motion Amplifier‚ Micrometer
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BRIGGS RAUSCHER OSCILLATING CLOCK COURSEWORK Aim: To investigate the effect of temperature on the rate of reaction. To investigate the order of reaction with respect to hydrogen peroxide and ethanoic acid (acetic acid) by the use of an oscillating clock reaction. To determine the activation enthalpy with and without catalytic ions and use this to compare the effectiveness. To investigate the rate equation‚ rate constant and possible mechanism for this reaction. Background research: The Briggs-Rauscher
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FOUNDATION IN SCIENCE INTRODUCTION TO PRACTICAL ORGANIC CHEMISTRY – MAKING AND PURIFYING ORGANIC COMPOUNDS Stage 1 – Deciding how much reagent to use Most organic reactions do not go to completion; most reach an equilibrium position with significant quantities of reactants still remaining. In addition‚ separating the desired product from the rest of the reaction mixture‚ and then purifying it‚ will result in the loss of more of the product. The amount of product obtained expressed as a percentage
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Transformer BEE2123 ELECTRICAL MACHINES Mohd Rusllim Bin Mohamed Ext: 2080 A1-E10-C09 rusllim@ump.edu.my © MRM 05 Learning Outcomes At the end of the lecture‚ student should to: Understand the principle and the nature of static machines of transformer. Perform an analysis on transformers which their principles are basic to the understanding of electrical machines. © MRM 05 Introduction A transformer is a static machines. The word „transformer‟ comes form
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CHM130 Lab 4 Calorimetry Name: Data Table: (12 points) ALUMINUM METAL Pre-weighed Aluminum metal sample mass (mmetal) 20.09 g Temperature of boiling water and metal sample in the pot (Ti(metal)) dsdfa(Ti 99°C Temperature of cool water in the calorimeter prior to adding hot metal sample (Ti(water)) 24°C Maximum Temperature of water/metal in calorimeter after mixing (Tf) 28°C LEAD METAL Pre-weighed Lead metal sample mass (mmetal) 20.03g Temperature of boiling water and metal sample
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Holy Spirit within their denomination. For the orthodox Christians (OC) there was a lot of controversy as OCs have very solemn and silent services (opposite of CR). Most OCs dislike modernisation and don’t want to abandon the richness of tradition. They think CR can only fill the gaps in OC where there is something missing. They believe that speaking in tongues is actually mocking the HS so don’t agree with CRs doing it. OCs try not to babble or become too emotional as they condemn emotional frenzy
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the other cable to the computer. Engage Logger Pro and open the file titled “04 Freezing Point” in the “Advanced Chemistry with Vernier” folder. Part 1: Determine the Freezing Point of Pure Lauric Acid Fill a 400 mL beaker with 300 mL of 20 - 24 oC tap water and insert it in the ring stand. Use the utility clamp while obtaining a hot test tube containing hot‚ melted lauric acid from your instructor. Fasten the clamp at the top of the tube. Put the temperature probe into the hot lauric acid and
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