IELTS Vocabulary: How something works A. Look at these sentences and decide which object is being described in each one. Use the words in bold to help you. You will find the objects hidden in the word grid at the bottom of the page. 1. The most important part of this object is a strip of two different metals‚ one on top of the other. As they heat up‚ both metals expand‚ but one does it faster than the other. The strip bends and connects with a switch‚ which turns off the power supply. When the strip cools
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Synthesis of 3-Acetylcoumarin Introduction In thi lab we were asked to make coumarin. Coumarin is a fragrent organic chemical compound. It is a natural substance found in many plants. The name comes from the french term for tonka bean. The substance was first isolated as a natural product in 1820. Coumarin has been showed to be useful in biological activity‚ but they have been approved for few pharmacutical uses. It has been reported that coumarin activity includes HIV‚ tumors
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HEALTH HAZARDS OF THE DYE INDUSTRY . The first step in prevention of poisoning in the dye industry includes well-ventilated‚ properly equipped buildings. Selection of workmen is important and the use of the best methods in manufacturing. These investigations‚ which are based on 2‚500 employees‚ whose blood was tested periodically‚ yield some minor diagnostic material. The hazards of the dye industry are those connected with any industry plus the poisonous chemicals necessarily handled in the
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TABLE OF CONTENTS PAGE 2. Acknowledgements 3. Dedication 4. Introduction and Background 5. Location 6. Problem Statement 7. Aims and Objectives 8. Methodology 9. Primary and Secondary Data 10. Limitations ACKNOWLEDGEMENTS DEDICATION INTRODUCTION “Since the beginning of time people have needed to find a way of disposing of their trash” (Bassis Luke). Proper garbage disposal is important to ensure everyone’s safety from possible health hazards. The improper waste
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carbocation (4) free radical Ans. (3) 34. Given : 31. E0 Cr 3 / Cr The molarity of a solution obtained by mixing 750 mL of 0.5(M)HCl with 250 mL of 2(M)HCl will be :(1) 0.875 M (2) 1.00 M (3) 1.75 M (4) 0.975 M Ans. (1) 37. Arrange the following compounds in order of decreasing acidity : 36. OH ; Cl (I) OH ; CH3 (II) OH ; NO2 (III) OH 1.51 V OCH3 (IV) E0 Cr2 O2 / Cr 3 7 MnO4 / Mn2 0.74 V ; E 0 1.33 V ; E 0 / Cl 1.36 V Cl (1) II > IV >
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| |Chemistry paper | | | | | | |Class: Ten |Roll No: |Subject: Chemistry | |Student’s
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chem FATHER AGNEL SCHOOL CLASS IX SUB : CHEMISTRY Matter In Our Sorroundings 1. Define matter. 2. What are the characteristics of matter? 3. What do you mean by the following terms: a. Evaporation b. Sublimation c. Condensation d. Latent Heat of Fusion e. Latent Heat of vaporisation. f. . Melting point g. Boiling point 4. Why do gases diffuse rapidly? 5. Write the relationship
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of Money – Future Value – Present Value – Value Additivity • Project Evaluation – Net Present Value – The Net Present Value Rule • Shortcuts to Special Cash Flows – Perpetuities - Growing Perpetuities – Annuities - Growing Annuities • Compound Interest Rates – Compound Interest versus Simple Interest – Discrete Compounding – Continuous Compounding – Effective Annual Yield • Adjusting for Inflation Principles of Finance Present Value - Page 3 Valuing Cash Flows • Most investment decisions involve
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FIN 370 Lab Study Guide - All Weeks - Additional Formula (Compound interest) to what amount will the following investments accumulate? a. $5‚000 invested for 10 years at 10 percent compounded annually 5000 x (1.10)^10 = 5000 x2.5937 =12968.5 b. $8‚000 invested for 7 years at 8 percent compounded annually 8000 x (1.08)^7 = 8000 x 1.7138 = 13710.59 c. $775 invested for 12 years at 12 percent compounded annually 775 x (1.12)^12 = 775 x3.8959 =3019.38 d. $21‚000 invested for 5 years at 5 percent
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purpose of the lab was to observe what happens when two ionic compounds are combined in a small area and to be able to record the type of precipitate that is formed. Background: An ionic compound is formed when ions “transfer‚” or lose or gain electrons. The ions in an ionic compound are held together by ionic bonds in a lattice shaped structured. They are packed tightly together to maximize the attraction between the ions. When two compounds are mixed together‚ they form a precipitate. A precipitate
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