magnesium by hydrogen displacement method. (equivalent weight of magnesium=12) Set 2 11. To prepare hydrogen gas in lab and collect it to 12. To prepare carbon dioxide gas in lab and collect it to study its properties. 13. To prepare ammonia gas in lab and collect it to study its properties. Set 3 14. To detect the acid radical (negative charge) present in the given salt sample by dry and wet way. 15. A1 16. A2 17. A3 18. A4 19. A5 20. A6 21. A7 Set 4
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the reaction in each of the reagents • The overall order of the reaction 2) The rate constant for the reaction HNO3 + NH3 ( NH4NO3 is 14.5 L / mol.sec. If the concentration of nitric acid is 0.050 M and the concentration of ammonia is 0.10 M‚ what will the rate of this reaction be? 3) When two compounds‚ A and B‚ are mixed together‚ they form compound C‚ by a reaction that’s not well understood. Fortunately‚ the following rate information was experimentally
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4.1 & 4.2: General properties of aqueous solutions and Precipitation Reactions: 1. (Brown 4.11) When asked what causes electrolyte solutions to conduct electricity‚ a student responds that it is due to the movement of electrons through the solution. Is the student correct? If not‚ what is the correct response? 2. (Brown 4.15) Specify what ions are present in solution upon dissolving each of the following in water: a. ZnCl2 c. (NH4)2SO4 b. HNO3 d. Ca(OH)2 3. (Brown 4.16 ) Specify
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BUSINESS PLAN PROGRESSIVE FARMERS’ GROUP COMMERCIAL PRODUCTION OF SUNFLOWER MAY‚ 2012 TABLE OF CONTENTS TABLE OF CONTENTS II LIST OF TABLES IV LIST OF ABBREVIATIONS V EXECUTIVE SUMMARY VI INTRODUCTION 1 1.1 Name of the project 1 1.2 legality of the group 1 1.3 Objectives of the project 1 2.0 ECONOMIC ASPECTS 2 2.1 Sunflower cultivation in Tanzania 2 2.2 Contribution of the business enterprise to development objectives 2 2.2.1 Contribution to export earnings. 3
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Name: Joie Vincent R. Dagohoy Date performed: 07-01-13 Student Number: 2009-33281 Date submitted: 07-08-13 Exercise 2 Formulation‚ Testing of Hypothesis‚ and Experimental Design I. Objectives: a. to define diffusion and demonstrate this process in gases b. to cite molecular weight and time as two factors affecting the rate of diffusion c. to formulate a hypothesis on the relationship of each of these factors on the rate of diffusion d. to conduct and experiment
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February 5‚ 2012 Chemistry 1211L - 146 - Spring 2012 Procedure The Synthesis of Cobalt Oxalate Hydrate Place 100 ml of distilled water in a 250-ml (or 400-ml) beaker. Add 1.26g of oxalic acid dihydrate (H2C2O4.2H2O) and 1 ml of concentrated ammonia. Stir the mixture until the solid has dissolved completely. Dissolve 2.34 g of cobalt chloride hexahydrate (CoCl2.6H2O) in 100 ml of water in an Erlenmeyer flask. While stirring the oxalic acid solution constantly‚ add the cobalt chloride solution
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Copyright © Glencoe/McGraw-Hill‚ a division of the McGraw-Hill Companies‚ Inc. Formula Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 N2H4 H N N H H H 14 7 H N N H H H H N H 2 N H H Unnecessary (octets complete) SiO2 O Si O O Si O Name Date Class TEACHING TRANSPARENCY WORKSHEET Lewis Structures 29 Use with Chapter 8‚ Section 8.3 1. Step 1 in drawing the Lewis structure for a molecule is to decide which atoms of the molecule
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In 1930‚ the Hay’s Production Code was introduced into the film industry to regulate films that were produced. It regulated several different aspects of movie scenes containing crimes against the law‚ vulgarity‚ sex‚ obscenity‚ profanity‚ costume‚ dances‚ religion‚ locations‚ national feelings‚ titles and repellent subjects. (History of the Motion Picture Rating System) When scenes in films dealt with crimes committed against the law‚ the Hays Production Code stated that the crimes could never
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PROBLEM SOLVING. 1. Calculate how many hydrogen atoms are contained in 2.3g of C2H5OH. [2] 2.3 x 1023 Hydrogen Atoms - 2.3g * 1mol/6.06g * 6.02 1023 / 1mol 2. An oxide of sulfur contains 60% by mass of oxygen. Determine the empirical formula of the compound. [2] 3. Ethylene glycol‚ the substance used in automobile antifreeze‚ is composed of 38.7 g carbon‚ 9.7 g hydrogen‚ and 51.6 g oxygen. a. What is the empirical formula of the compound?
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Appendix APPENDIX 1 Chemical tests for functional groups Homologous series/ Typical compound Functional group(s) Alkanes CH3CH3 ethane C – C and C–H Alkenes CH2 = CH2 ethene C=C Chemical tests/Observations Add liquid bromine in ultraviolet light (or sunlight): White fumes of HBr liberated; decolourisation of bromine occurs slowly (a) Add Br2 in CCl4 at room temperature: Decolourisation of bromine occurs immediately CH2 = CH2 + Br2 → CH2BrCH2Br (b) Add acidified
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