A colorless liquid. Insoluble in water. Corrosive to metals and tissue. Non-combustible‚ substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Some are oxidizers and may ignite combustibles (wood‚ paper‚ oil‚ clothing‚ etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Sodium carbonate Odorless white crystalline powder or lumps. Slightly alkaline (bitter) taste. pH (of freshly prepared 0.1 molar aqueous
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The story entitled Breastfeeding past a year: exploring benefits‚ cultural influences and more by Jen Davis was an extremely informative and beneficial story. The purpose of the writing was to persuade readers to understand her point of view‚ change their minds and take action against the myths and negative voice of others. Many new moms who chose to breastfeed are struck with the conflict of when to wean. Most are told past six months is unnecessary and often talked down on when they continue
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Certificate of Education Ordinary Level * 2 1 9 4 9 5 3 2 4 3 * 1123/21 ENGLISH LANGUAGE Paper 2 Reading May/June 2013 Candidates answer on the Question Paper. Additional Materials: 1 hour 45 minutes Insert READ THESE INSTRUCTIONS FIRST Write your Centre number‚ candidate number and name on all the work you hand in. Write in dark blue or black pen. Do not use staples‚ paper clips‚ glue or correction fluid. DO NOT WRITE IN ANY BARCODES. Answer all questions in both Section
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“There is growing acceptance all over the world that the quality of the teacher is the most important determinant of how much students learn. In this context‚ it makes sense to check that the national curriculum provides the right balance between providing a firm structure for shared national expectations for what students should learn and allowing enough scope for teachers to have the freedom to use their creativity to maximise student learning.” Discuss. The aims of the national curriculum are
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Section II - Predict the product(s) and balance the chemical equation 1._______ C6H6 + ______ O2 ® 2._____ Pb + _______ AgNO3 ® 3.______ Ca + ______ O2 ® 4. ______ Li2SO4 + _______ BaCl2 ® 5.______Sr3N2 ® Section III - On a separate sheet of paper‚ write a balanced equation for the following reactions and classify the type of reaction. a. Aluminum metal reacts with oxygen (in the air) to form aluminum oxide. b. Sodium oxide reacts with carbon dioxide to form sodium carbonate. c. Calcium
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Box-Jenkins Modeling and Forecasting of Monthly Electric Consumption of PANELCO III Customers ______________________________ A Special Problem Presented To The Panel of Evaluators Mathematics Department Pangasinan State University Urdaneta City _______________________________ In Partial Fulfillment of The Requirement for the Degree of Bachelor of Science in Mathematics Major in Statistics ______________________________ By: Jake Anthony E. CantubaMarch 2014 APPROVAL SHEET In partial
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Ahmed Fun Filled Hands On Science 17 January 2013 Demonstrations in Chemistry Class Chemistry is a class that a lot of college student are afraid of‚ and when I think of chemistry‚ complex equations that don’t benefit come to my mind. The reason is that all I got out of chemistry is those unbeneficial equations‚ for me at least. Also‚ I learned that H2O is water. With all those negative statements‚ I still believe that chemistry is a very important subject to understand the magic of this life and
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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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Experiment 1 : Redox Titration Using Sodium Thiosulphate Abstract This experiment is to determine the concentration of oxidizing solution using the iodine/ thiosulphate titration where the reducing solution is potassium iodate solution and the oxidizing solution is sodium thiosulphate solution. Potassium iodate solution which is an oxidizing agent is added into an excess solution of acidified potassium iodide. This reaction will release iodine. Potassium iodide is acidified with sulphuric acid
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IMPORTANT TOPICS OF CHEMISTRY 2009 Chap No.1 Q.1- Define chemistry & branches of chemistry any three? Q.2-Lrean about history of chemistry for short question and fill in the blanks? Q.3 what is scientific method? Define hypothesis and theory? CHAP NO.2 Q.1-Learns about any three laws of chemical combination only statement and example? Q.2-Define chemical reaction and types of chemical reaction with one example for each with the help of chemical equation? Q.3-Define MOLE‚ Atomic no
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