PRACTICAL 2: Preparation of sodium hexanitrocobaltate (III) Date: 12 March 2014 INTRODUCTION Sodium hexanitrocobaltate (III) is a coordination complex which has the formula Na3[Co(NO2)6]. This compound is yellow in colour. It consists of a central Co3+ ion surrounded by six nitro ligands [1]. This compound is used as a qualitative test for potassium and ammonium ions (so long as certain other cations are not present) [1]. Potassium and ammonium are insoluble in water‚ while sodium is [1]. Hence‚ the
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Hydrogen‚ interpreted from Greek as the water-creator (RSC site). Fundamentally it is by far the simplest element‚ yet it composes virtually all of the visible universe. Hydrogen is not merely omnipresent; in actuality‚ it is the oldest and arguably the most essential corporeality to the creation and sustainability of utterly all in existence. The aforementioned characteristic that hydrogen is immensely crucial to the survival of all lifeforms is supported by the fact that it is the building block
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THERMAL DAIRY By Carlos Val Background 2 In order to achieve a better understanding of the concept of Adaptive Thermal comfort I have recorded my thermal sensation by an hour intervals during a week. At this time‚ the relative humidity and temperature of my surrounding environment was been recorded by a sensor carried by me at all the time‚ every 900seconds. Background 3 A further thermal study of my living space was developed at the same time but carried out for a longer period
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Standardisation of a Solution of Sodium Hydroxide: Introduction: In a lot of cases it isn’t possible to prepare a solution by accurate weighing of the solute‚ dissolving in water and diluting to volume. There are many possible reasons for this‚ but in the case of sodium hydroxide‚ the solid absorbs moisture from the air‚ and also reacts with carbon dioxide from the air. In that case‚ it cannot be accurately weighed in air. In an experiment like this‚ a solution of the approximate required concentration
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Heavy calcium carbonate grinding mill: 1) High capacity 2) Low consumption 3) Finished fineness adjustable Detailed Product Description about Heavy calcium carbonate grinding mill Heavy calcium carbonate grinding mill is mainly applied to grind non-inflammable‚ non-explosive and brittle materials with Mohs’ hardness under six. Such as calcite‚ chalk‚ limestone‚ dolomite‚ kaolin‚ gypsum‚ and talc etc‚ totally more than 100 kinds of materials. Product fineness can be controlled between 300~3000
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January 23rd‚ 2013 Generation of Hydrogen Gas Abstract Hydrogen gas was produced from a reaction in a eudiometer between a weighted amount of magnesium ribbon and 5ml of diluted 6M hydrochloric acid. The partial pressure of the hydrogen gas produced was calculated using Dalton’s Law of partial pressure. With this partial pressure value along with known values in the experiment the number of moles of hydrogen gas produced could be calculated using the ideal gas law equation and this experimental
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its very high thermal and electrical conductivity. It is adaptable and durable. Copper does not react with water‚ and
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Analyzing a Hydrogen Peroxide Solution Purpose: The technological purpose of this investigation is to test and evaluate the percent concentration of consumer solution of hydrogen peroxide. Problem: What is the percent concentration of hydrogen peroxide in a consumer product? Design: An acidic solution of primary standard‚ iron (II) ammonium sulfate-water (1/6)‚ is prepared and the potassium permanganate standard. A 25.0 mL sample of a consumer solution of hydrogen peroxide is diluted to 1
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Hulsey Fire Tech 107 15 November 2015 Hydrogen Peroxide According to Lee Lerner‚ (2008)‚ “Hydrogen Peroxide is most widely found in homes in brown bottles containing three percent solutions (3% hydrogen peroxide and 97% water).” Lee Lerner (2008) writes “Hydrogen Peroxide is a colorless liquid that mixes with water and is widely used as a disinfectant and bleaching agent.” Hydrogen Peroxide is used in many different ways and has different hazards. “Hydrogen peroxide is a strong oxidizing agent used
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F UNDAMENTALS OF T HERMODYNAMICS SEVENTH EDITION CLAUS BORGNAKKE RICHARD E. SONNTAG University of Michigan John Wiley & Sons‚ Inc. PUBLISHER ASSOCIATE PUBLISHER ACQUISITIONS EDITOR SENIOR PRODUCTION EDITOR MARKETING MANAGER CREATIVE DIRECTOR DESIGNER PRODUCTION MANAGEMENT SERVICES EDITORIAL ASSISTANT MEDIA EDITOR COVER PHOTO Don Fowley Dan Sayre Michael McDonald Nicole Repasky Christopher Ruel Harry Nolan Hope Miller Aptara® Corporation Inc. Rachael Leblond Lauren Sapira c Corbis Digital
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