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Heats of Reaction Lab Report Purpose: To measure the heats of reaction for three related exothermic reactions and to verify Hess’s Law of Heat Summation. NaOH(s) ( Na+(aq) + OH-(aq) ΔH = -10.6kcal/mol NaOH(s) + H+(aq) + Cl-(aq) ( H2O + Na+(aq) + Cl-(aq) ΔH = -23.9kcal/mol Na+(aq) + OH-(aq) + H+(aq) + Cl-(aq) ( H2O + Na+(aq) + Cl-(aq) ΔH = -13.3kcal/mol Background: Energy changes occur in all chemical reactions; energy is either absorbed or released. If energy is released in
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During fluidized bed combustion potassium and calcium from biomass ash can react with quartz (SiO2) from the bed sand already at the normal operation temperatures of 700−900 °C‚ forming a layer of Ca‚K-silicate onto the bed particle. The layer becomes thicker in time‚ and the particle size increases. The layer is sticky‚ and the bed particles can agglomerate together increasing the bed particle size further. During unsteady operation of the boiler‚ or on an occasional excursion to high temperature
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The Summer Heat By Ishan Rodman Sophomore Humanities Project May 20th‚ 2016 Mr. Eason Mrs. Ihrke The sky was ablaze but this was a different kind of fire. A warm fire‚ one that enveloped me and gave hope that we would no longer be afraid and no longer be scared. We stepped out of the shade of the barn and climbed over the ridge. We could all see one thing‚ men in dull gray uniforms running out of the city. Towards the south a sea of blue and green push forward flooding the city washing it
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Factors Affecting Enzyme Action ------------------------------------------------- Term 1 Biology Nicole Goosen Table of Contents Introduction: 3 Materials: 3 Method: 4 Risk assignment: 4 Risk: 4 Personal Protective Equipment: 4 Results: 5 Discussion: 5 Conclusion: 6 Introduction: How is the human body able to digest the food that you eat? How quickly your body digests your food? This is because the human body contains enzymes that are the biological substance‚ a.k.a proteins
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The Effect of Different Molar Mass on the Diffusion on Substances Lunar-maius A. Gaerlan Group 2 Sec. X – 9l August 15‚ 2012 ABSTRACT The effect of molecular weight on the rate of diffusion was assessed using agar-water gel test. The agar-water gel set up was composed of a petri dish of agar-water gel containing three wells. Drops of potassium permanganate (KMnO4)‚ potassium dichromate (K2Cr2O7) and methylene blue(C16H18N3SCl) were simultaneously introduced to each well. Methylene blue
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Change over Time Essay (Europe from 500 to 1500) In Europe from 500 CE to 1500 CE‚ a continuity was the importance of the Church‚ and two changes were the split of the church into two branches‚ Roman Catholic and Eastern Orthodox‚ and the ruination of structure in Europe caused by the black plague. A continuity in Europe was the importance of the Church. The importance of the church happened because of how the earlier empires used Christianity as a unifier. The popularity of Christianity was first
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BAILEEEEEY S*Class/Colour influences the choices available to people and the decisions that they make "In the Heat of the Night" is novel written by John Ball to show racial attitudes that happened in a small town in the southern part of the United States. The novel shows how one can never get rid of discrimination but can overcome it. The movie displays how some of the white men in the town of Wells judge based the exterior of individuals. The white detectives think they are a superior
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..................................5 g) References..............................................................................................5 OBJECTIVE This experiment was carried out to study the conduction of heat along a composite bar and evaluate the overall heat transfer coefficient. INTRODUCTION Conduction is defined as the transfer of energy from more energetic particles to adjacent less energetic particles as a result of interactions between the particles. In solids‚ conduction
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Theme of colonization in Heat of Darkness The growth of liberalism and colonialism as social and political forces took place almost simultaneously in the beginning of 19th century. Colonialism is related to the concept of imperialism. The English novelists who are concerned with the problem of colonialism are mainly E.M Forster and Joseph Conrad. Colonialism and imperialism are shaping forces in their novels. Forster’s liberalism and his depiction of the colonialism are never introduced in clear
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