Include phases of matter for ALL reactants and products. Circle the chemical formula of the precipitate‚ if any‚ in each reaction. Balance all chemical equations. 1. Write a chemical equation for the reaction that occurs when solid sodium oxide is added to water at room temperature to yield sodium hydroxide . (Check the Solubility Rules to determine the phase of matter of sodium hydroxide.) Na2O (s) + H2O (l) → 2 NaOH (aq) 2. Translate the following chemical
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Chemical Reactions and Equations Chemical Reaction: The transformation of chemical substance into another chemical substance is known as Chemical Reaction. For example: rusting of iron‚ setting of milk into curd‚ digestion of food‚ respiration‚ etc. In chemical reaction new substance is formed which is completely different in properties from the original substance‚ so in a chemical reaction chemical change takes place. Following are the signs of chemical reaction: (a) Change of state of substance
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four metals (magnesium - chromium) are considered active metals and they will react with very hot water or steam to form the oxide and hydrogen gas. * The oxides of all of these first metals resist reduction by H2. * The next six metals (iron - lead) replace hydrogen from HCl and dil. sulfuric and nitric acids. Their oxides undergo reduction by heating with H2‚ carbon‚ and carbon monoxide. * The metals lithium - copper‚ can combine directly with oxygen to form the oxide. * The last
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Nomenclature for Ionic Compounds Ionic compounds consist of cations (positive ions) and anions (negative ions). The nomenclature‚ or naming‚ of ionic compounds is based on the names of the component ions. Here are the principal naming conventions for ionic compounds‚ along with examples to show how they are used: Roman NumeralsA Roman numeral in parentheses‚ followed by the name of the element‚ is used for elements that can form more than one positive ion. This is usually seen with metals. You
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_____________________________CORRTECH CATHODIC PROTECTION FOR PORT FACILITIES _____________________________CORRTECH Contents • • • • • • What causes corrosion What is CP and how does it work? Galvanic vs. impressed current Electrolytes (or where can I use CP) Marine applications Condition assessments _____________________________CORRTECH What is Corrosion? Corrosion is defined as the degradation of a material due to a reaction with it’s environment. Metals require energy to process
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pure state. It occurs as an oxide in the minerals ilmenite‚ rutile and sphene. To obtain titanium oxide‚ the mineral is ground and mixed with potassium carbonate and aqueous hydrofluoric acid to yield potassium fluorotitanate. The fluorotitanate is extracted with hot water and decomposed with ammonia. The resulting ammoniacal hydrated oxide‚ when ignited in a platinum vessel‚ yields titanium dioxide‚ TiO2. Titanium is obtained in the pure form by first treating the oxide with chlorine to form titanium
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THE MOLE CONCEPT References : Mohammed and Lambert ( Old Edition) Chapter 11 pg. 107 Mohammed and Lambert ( New edition) Chapter 8 pg 123 Anne Tindale Chapter 10 pg 46 The following topics will be covered : 1. Definition of Relative Atomic and Relative Molecular Masses. 2. Calculation of Relative Molecular Masses 3. Converting Moles to Grams / Grams to Moles 4. Calculation from equations Masses of substances /Volumes of gases / Concentration
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MATERIALS : METALS AND NON-METALS Y Iron Coal ou are familiar with a number of materials like iron‚ aluminium‚ copper‚ etc. Some materials have been given in Table 4.1. Table 4.1 : Appearance and Hardness of materials Object /Material Appearance Hardness (Shiny/Dull) (Very hard/ Not very hard) similar change if we try to beat a wood log ? Let us find out. Activity 4.1 Take a small iron nail‚ a coal piece‚ a piece of thick aluminium wire and a pencil lead. Beat the iron nail with
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number of platters a drive can have is limited by the drive’s vertical physical size. The maximum number of platters I have seen in any 3 1/2-inch drive is 12; however‚ most drives have six or fewer. Platters were originally made from an aluminum/magnesium alloy‚ which provides both strength and light weight. However‚ manufacturers’ desire for higher and higher densities and smaller drives has led to the use of platters made of glass (or‚ more technically‚ a glass-ceramic composite). One such material
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carbon disulfide – used in fumigation‚manufacturing‚insecticide and solvent | alcohol‚ wood | methyl alcohol - used as an antifreeze‚ solvent‚ fuel‚ and as adenaturant for ethanol | alum | aluminum potassium sulfate | alumina | aluminum oxide - As a filler‚ abrasive‚ effect pigment | antichlor | sodium thiosulfate - used for the neutralization of chlorine and/or Iodine solutions at your hatchery or aquaculture facility | antifreeze | ethylene glycol - used in applications ranging
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