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    chemistry

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    India to victory at sea during a war! Batteries helped submarines to stay underwater and strike the enemy! Submarine batteries are nothing but electrochemical cells! That’s why electrochemistry is so important and everyone should try it!! 6 Inside a space craft: How do people get oxygen inside a space craft? 7 Electrolysis is an important aspect of electrochemistry! 8 So there are plenty of reasons why we should learn electrochemistry! From submarines to space crafts

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    Chemistry

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    CHEM 301 LECTURE Unit 1 0 . COORDINATION CHEMISTRY Factors t hat affect solubility: Common ion: decrease in solubility Complex ion: increase in solubility How does complex ion formation increase solubility? Consider the complex ion formation between silver and ammonia: + Ag + 2NH3 A g(NH3 )2 + Kf = 1 .5 x 10 7 where Kf i s the formation constant (always >1 ‚ formation of the complex is highly favorable) Complex ion formation increases the solubility of sol ids in water

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    Chemistry

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    EXPERIMENT 2: SYNTHESIS OF ORANGE II (2-NAFTHOL ORANGE OBJECTIVE 1. To produce dye based to the coupling of diazonium. 2. To understand the characteristic of dye orange II. INTRODUCTION The first dye was introduced by William Henry Perkin on 1856. It can be produced by the coupling of diazonium sulfanilic acid with nafthol in alkaline solution.. This was the common method used to produce dye nowadays. In this experiment‚ dye produced was the orange II. Azo compound is compound that contain

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    French Igcse Tips

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    Situations for the role play could include: * Buying a train or bus ticket * Asking for directions * Shopping * Making enquiries about lost property * Making a reservation in a hotel or campsite. You may have to discuss the following and will be given information to guide your response: * your work experience * your region * your hobbies "Pourriez-vous répéter la question s’il vous plaît?" = Could you repeat the question please? "Je ne sais pas" = I

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    IGCSE psychology notes

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    Psychology Notes – Memory Flow of information in memory: Encoding  Storage  Retrieval Key terms: Encoding: changing information so that it can be stored Storage: holding information in the memory system Retrieval: recovering information from storage Multi-store: the idea that information passes through a series of memory stores Sensory store: holds information received from the senses for a very short period of time Short-term store: holds approximately seven chunks of information for

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    igcse economics grossary

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    ECONOMICS GLOSSARY YEARS 10 & 11 A Term Definition Absolute advantage The ability to produce a good or service at an `absolutely` lower cost. Absolute or nominal prices The prices that we observe today in terms of today’s pounds. Also called nominal or current prices. Aggregate demand All planned expenditures for the entire economy added together. Aggregate demand curve Planned purchase rates for all goods and services in the economy at various

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    IGCSE History Revision Charts 1. Were the peace treaties fair of 1919-21? -The Big Three (USA‚ France‚ Britain) gathered in Paris for the treaty of Versailles -USA believed in self determination at a strong way. -Britain and France wanted to make Germany pay a lot of reparations as well to gain other colonies‚ as a punishment for WWI. France wanted at an alarming rate to punish Germany. -The treaties could be justified because they had to control Germany and make sure it wouldn’t go to

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    CHEMISTRY

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    experimental techniques which can be used to tell us where the atoms are located in a molecule. Using advanced techniques‚ very complicated structures for proteins‚ enzymes‚ DNA‚ and RNA have been determined. Molecular geometry is associated with the chemistry of vision‚ smell and odors‚ taste‚ drug reactions and enzyme controlled reactions to name a few. Molecular geometry is associated with the specific orientation of bonding atoms. A careful analysis of electron distributions in orbitals will usually

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    chemistry

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    Source: Chemistry by C. Mortimer PP 1-5 Chemistry by R.S. de Borja PP 1-5 Definition of Chemistry Chemistry is concerned with the composition and the structure of substances and with the forces that hold this structure together. And the changes that undergoes with the energy involved in them. History Chemistry which emerged‚ took hundreds of years to develop the history of its development can be divided ranging into five

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    Chemistry

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    UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS General Certificate of Education Ordinary Level CHEMISTRY Paper 1 Multiple Choice May/June 2005 1 hour Additional Materials: Multiple Choice Answer Sheet Soft clean eraser Soft pencil (type B or HB is recommended) 5070/01 w w w e tr .X m eP e ap .c rs om READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples‚ paper clips‚ highlighters‚ glue or correction fluid. Write your name‚ Centre number and candidate number on the answer

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