Enthalpy of Neutralization Introduction Energy changes always accompany chemical reactions. If energy‚ in the form of heat‚ is liberated the reaction is exothermic and if energy is absorbed the reaction is endothermic. Thermochemistry is concerned with the measurement of the amount of heat evolved or absorbed. The heat (or enthalpy) of neutralization (∆H) is the heat evolved when an acid and a base react to form a salt plus water. Eq. 1 HNO2(aq) + NAOH(aq) → NaNO2(aq) + H2O(l) + Q Q in the
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Press in Sub Continent: Beginning of Media: In the sub-continent‚ journalism started with preliminary handwritten news sheets prepared by government news-writers during the Muslim rule. They were written dated‚ appeared at regular and frequent intervals. Such news sheets provided the rulers with information from all corners of the empire‚ regarding public occurrences‚ current-events‚ mischief in societies and hardships faced by the people. From this information‚ the rulers used to take decisions
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16-3 Red Cabbage Juice pH Indicator Sources: Prof. George Ewing’s C100 Demonstration Notes; Prof. Carolyn Huffman’s Fall ’93 C100 lecture; B. Z. Shakhashiri‚ 1989‚ Chemical Demonstrations: A Handbook for Teachers of Chemistry‚ vol. 3‚ pp 162-166. Description and Concept: Red cabbage juice will change to a variety of colors when added to solutions of various pH. Red cabbage juice is a pH indicator. Materials: red cabbage* blender hot or boiling water filter paper (coffee filters
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Chem 31.1 Post Lab 3 CARBONYL COMPOUNDS AND CARBOHYDRATES HYDROLYSIS OF POLYSACCHARIDES - - Susceptible to both nucleophiles and electrophiles Presence of C=O TEST FOR ALDEHYDES AND KETONES - - Reaction with 2‚4-DNP (Dinitrophenylhydrazine) Positive: Formation of yellow precipitate IODOFORM TEST - Carbonyl compounds: Methyl ketones will give a positive result Postive: Yellow precipitate (CHI3) MOLISCH’S TEST for carbohydrates - TOLLEN’S TEST – for aldehydes
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Rudin Lengo’s piano playing has been described as “profound‚ imaginative and exceptionally communicative”. Winner of the 2017 DMA Competition at the University of Toronto‚ the 2012 Glenn Gould School Concerto Competition‚ the 5th Knigge Music Competition and the 2010 TD Elora Competition‚ he was also the 2nd prize winner at the 40th William C. Byrd International Competition and winner of the Mary Winston Smail Memorial Award for Best Pianist at the 2011 WAMSO Minnesota Competition‚ the London Kiwanis
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as from certain fruits) * Acetic acid (Vinegar) * Lactic acid (in buttermilk) * Tartaric acid (Tamarind) * Oxalic acid (Tomatoes) Commonly found bases in laboratories and in our daily life are: Caustic soda‚ NaOH; Caustic potash‚ KOH; Milk of magnesia‚ Mg(OH)2; Liquor ammonia‚ NH3; Washing powder‚ Tooth paste. One can familiarize with the acid base nature of some of the common substances by using litmus solution. Activity : Make solutions of the following substances: ’Borax’
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THE STUDY OF CHLOROPHYLL CONTENT IN VARIOUS PLANTS A Project Report Submitted by SANDEEP SETHI In partial fulfillment of the CBSE GRADE XII IN BIOLOGY AT 2015-16 CERTIFICATE This is to certify that Sandeep Sethi of grade XII‚ ST. XAVIER INTERNATIONAL SCHOOL‚ BHUBANESWAR with Registeration Number _______________________ has satisfactorily completed the project in Biology on STUDY OF CHLOROPHYLL CONTENT IN FIVE DIFFERENT SPECIES OF PLANTS‚ in partial fulfillment of the requirements
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ISBN 1-256-09271-1 Medical Language‚ Second Edition‚ by Susan Turley. Published by Prentice Hall. Copyright © 2011 by Pearson Education‚ Inc. ISBN 1-256-09271-1 Medical Language‚ Second Edition‚ by Susan Turley. Published by Prentice Hall. Copyright © 2011 by Pearson Education‚ Inc. Measure Your Progress: Learning Objectives After you study this chapter‚ you should be able to 1. Identify the structures of the respiratory system. 2. Describe the process of respiration. 3. Describe common
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1 Which of the following compounds is a strong electrolyte? E A. H2O B. O2 C. H2SO4 D. C6H12O6 (glucose) E. CH3COOH (acetic acid) Answer: C 4.2 Which of the following compounds is a strong electrolyte? E A. H2O B. N2 C. KOH D. C2H6O (ethanol) E. CH3COOH (acetic acid) Answer: C 4.3 Which of the following compounds is a weak electrolyte? E A. HCl B. CH3COOH (acetic acid) C. C6H12O6 (glucose) D. O2 E. NaCl Answer: B 4.4 Which of
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Stryker Corporation | In-sourcing PCBs analysis | 42506514 Ara Koh | TABLE OF CONTENTS EXECUTIVE SUMMARY The purpose of this report is to assess the performance of Stryker Corporation and recommend which company would be the better project valuation and capital expenditure proposal which is Option #3 over the coming period. The report calculates the ~~~~~~~~~~~ for in-sourcing Printed circuit boards (PCBs). INTRODUCTION When business operating‚ to maximize profit is most
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