thermodynamics plays a vital role in the design of any engine or power-generating plant‚ and therefore a good grounding in thermodynamics is required for much work in engineering. If thermodynamics only governed the behavior of engines‚ it would probably be the most economically important of all sciences‚ but it is much more than that. Since the chemical and physical state of matter depends strongly on how much thermal energy it contains‚ thermodynamic principles play a central role in any description of
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Chemical Education Today Especially for High School Teachers by Erica K. Jacobsen Chemistry in My Kitchen The Jacobsen kitchen is an unusual place. The atmosphere is often more “mad scientist” than “gourmet chef ”. Testing JCE Classroom Activity procedures at home brings an eclectic collection of materials to our counters. Our toaster competes for space with a collection of funnels made from 2-liter plastic beverage bottles and rubber stoppers (1). Baking soda from my shelf joins citric acid
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INORGANIC CHEMISTRY – CLASS XI (ISC) Properties of Group 1 elements [Alkali metals] 1. Due to high reactivity‚ alkali metals do not occur free in nature. Elements of group 1 (or IA) are known as alkali metals because their hydroxides are soluble in water and form strongly alkaline solutions. Alkali metals are stored under kerosene oil because they get tarnished on exposure to air. 2. The general electron configuration of alkali metals is ns1. 3. Alkali metals have largest size and lowest
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Atmosphere –Water Interactions C. P. Huang Stumm W. and J. J. Morgan. Chapter 5. Aquatic Chemistry 1 Environmental Systems 2 5.2 Atmospheric generation of acidity 3 Genesis of acid rain 4 Chemical processes and Chemical Composition of Water Droplets 5 uM ueq/L NO360 60 SO4244 88 Cl 25 25 S(X) 173 Mg2+ 4.5 9 Ca2+ 16 32 NH4+ 85 85 K+ 2 2 Na + 5 5 H+ 50 50 S(M) 183 CH3COOH 5 5 6 7 8 Total Annual
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INTRODUCTION:- In the present age‚ there is a great treat of soil as wells air pollution caused by polythene. The disposal of plastic is a great treat for mankind .it has affected living as well as non-leaving things. To solve this problem and to save our environment from various harmful effects of polythene‚ this exhibit has been prepared. SCIENTIFIC PRINCIPALS:- This is based on the following principals:- 1. Prevention of soil and air pollution caused by polythene. 2. Utilisation of row
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CARIBBEAN EXAMINATIONS COUNCIL Caribbean Advanced Proficiency Examination CAPE ® CHEMISTRY SYLLABUS Unit 1 - effective for examinations from May/June 2007 Unit 2 - effective for examinations from May/June 2008 CXC A11/U2/06 Published by the Caribbean Examinations Council All rights reserved. No part of this publication may be reproduced‚ stored in a retrieval system‚ or transmitted in any form‚ or by any means electronic‚ photocopying‚ recording or otherwise without prior permission
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THE IMPORTANCE OF DAILY HOMEWORK I think that daily homework is necessary for a student. Daily homework is a important factors in life of education. A lot of students face daily homework in school for years. I think that there are a lot of useful points. Firstly‚ I will explain that homework supply a person that he or she is regular. Secondly‚ I will talk that daily homework develop achievement. Thirdly‚ I will explain that daily homework supply feel of relaxing. Firstly‚ a lot of student study
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Daily Life in Ancient Rome The people in ancient Rome lived everyday life in reference to the social status of the people the poorest of the people being the most oppressed in the kingdom. The people in the other societies were‚ however different from the ancient Romans. The book “Roman Blood” is a history book that depicts the times of the ancient ruler Sulla‚ who was a dictator in 80 B.C. The ruler like many others was above the law and had command over numerous numbers of people. Ancient Rome
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INFLUENCE OF ADVERTISING ON DAILY LIFE The impact of advertising is a matter of continuous debate. For and against claims about advertisement have been made in different contexts. Cigarette manufacturers have been claiming that cigarette advertising does not encourage smoking and their eventually successful opponents just the opposite. Children under the age of four may be unable to distinguish advertising from other television programs‚ as the faculty to judge a message develops on attaining
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guess paper 1. Express the rate of following reaction in terms of disappearance of hydrogen in the reaction. 3H2(g) + N2(g) 2NH3(g) 2. What is peptisation? 3. Write Reimer Tiemann reaction. 4. Why is CO stronger ligand that Cl-. 5. Write structure of 2-(2-Bromophenyl)butane. 6. Complete the reaction C6H6+R COCl 7. Why pentahalides more covalent than trihalides? 8. What is difference between nucleoside and nucleotide? 9. Explain the following- (a) Gattermann Koch
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