COMPOUNDS “Analytical chemistry -I” http://foricseandbeyond.blogspot.in/ metal oxide “Oxides of metals are generally stable to heat and they are considered to be most stable form of compound found in nature.” Oxides of potassium‚sodium‚calcium‚magnesium‚ aluminum ‚ zinc‚iron‚lead and copper are stable to heat uO C PbO Zn O http://foricseandbeyond.blogspot.in/ MERCURIC OXIDE “Mercury(II)oxide” “orange red” 2HgO 2Hg + O2 1.The amorphous powder changes to dark red and
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of the Experiment: The Empirical Formula of an Oxide Authors: Section Number: Chemistry Location and Date II. Abstract The aim in this lab was to determine the empirical formula of an oxide of magnesium through combustion in air. This was achieved by heating an established mass of magnesium in air inside of a crucible‚ ultimately attaining a compound that contained Mg and O. The major result of the experiment was the empirical formula of the oxide of magnesium. III. Introduction An empirical
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atmospheric condition i.e.‚ moist air‚ carbon dioxide form undesirable compounds on the surface is known as corrosion‚ The compounds formed are usually oxides . Rusting is also a type of corrosion but the term is restricted to iron or products made from it .Iron is easily prone to rusting making its surface rough. Chemically‚ rust is a hydrated ferric oxide. Titanic‘s bow exhibiting microbial corrosion damage in the form of ‘rusticles’ Rusting an Electrochemical Mechanism ; Rusting may be explained
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rocket? d. How many grams of H20 are made when 450. kg of N204 are consumed? jjj2. Joseph Priestley is credited with the discovery of oxygen. He produced O.‚ by heating mercurv(II) oxide‚ HgO‚ to decompose it into its elements. How many moles of oxygen could Priestley have produced if he had decomposed 517.84 g of mercury oxide? 0. Iron(III) chloride‚ FeCl3‚ can be made by the reaction of iron with chlorine gas. How much iron‚ in grams‚ will be needed to completely react with 58.0 g of Cl2? 194. Sodium
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Si + 2H2O → SiO2 + 2H2 The oxidation process can be implemented through diffusion of either water or an oxygen species through the oxide already formed up which then reacts with the silicon at the Si-SiO2 interface. At high temperature‚ thermal energy makes oxygen molecule moving much faster‚ which can drive them to diffuse across an existing oxide layer and react with Si to form SiO2. As the oxidation continues‚ the interface moves into the silicon and a new‚ clean silicon surface is produced
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information. The simplest compounds contain just two elements. Sodium chloride‚ NaCl‚ is an example of a binary compound. Several other examples are listed below. Potassium bromide KBr Calcium bromide CaBr2 Lithium fluoride LiF Lithium oxide Li2O When naming binary compounds follow these rules: 1. the element with the positive ionic charge is written first. 2. The second word is formed by changing the ending of the name of the element to “ide.” For example‚ bromine changes to bromide
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How do the total masses of the reactants and products compare?______________equal_________________ Section 11.1 continued In your textbook‚ read about mole ratios. Answer the questions about the following chemical reaction. sodium iron(III) oxide → sodium oxide iron 6Na(s) Fe2O3(s) → 3Na2O(s) 2Fe(s) 15. What is a mole ratio? A mole ratio is a ratio
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gives aluminium oxide and water 2. Iron (iii) oxide reacts with carbon forming iron and carbonmonoxide 3. Hydrogen peroxide reacts with lead sulphide forming lead sulphate and water 4. Lithium reacts with nitrogen forming lithium nitride 5. Nickel sulphate reacts with sodium phosphate to form nickel phosphate and sodium sulphate 6. Silver oxide reacts with hydrogen peroxide to form silver ‚ water and oxygen 7. Ammonia combines wuth oxygen to get nitrogen oxide and water
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Scrubber systems In short a scrubber system basically removes harmful materials from exhaust gases before they are released into the environment or atmosphere. There are two types of scrubbing methods. There is wet and dry scrubbing. Both systems work in similar ways and have the same end result. That is to change a toxic chemical into something less toxic or non-toxic. Now scrubber systems rely on a chemical reaction with a sorbent (which is a material that sorbs another substance or A substance
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Bauxite * Borax ix) The formula of Hypochlorous acid is: * HOCl * HClO2 * HClO3 * HClO4 x) The metal ion having the highest number of unpaired electrons is: * Mn2 * Fe2 * Co2 * Ni2 xi) The chemical name of laughing gas is: * Nitric oxide * Nitrous oxide * Nitrogen trioxide * Nitrogen pentoxide xii) This has the minimum hydration energy: * Na+ * K + * Rb+ * Cs+ xiii) Cycloalkanes have the general formula: * C Hn n2 2 * C Hn n2 * C Hn n2 2 * C Hn n2 4
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