yield of sodium oxide if I start with 20 grams of calcium oxide? 8) FeBr2 + 2 KCl ( FeCl2 + 2 KBr a. What is my theoretical yield of iron (II) chloride if I start with 34 grams of iron (II) bromide? b. What is my percent yield of iron (II) chloride if my actual yield is 4 grams? 9) TiS + H2O ( H2S + TiO What is my percent yield of titanium (II) oxide if I start with 20 grams of titanium (II) sulfide and my actual yield of titanium (II) oxide is 22 grams?
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This lead to questions and challenges at several levels of thoughts and to understand this oxides complex lies in the fabrication. Vanadium dioxide is usually synthesized by means of Chemical Vapor Deposition (CVD)‚ Physical Vapor Deposition (PVD)‚ and sol-gel method. The synthesized method depends on the physical and chemical properties and
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Semiconductors are either solid or liquid material‚ able to conduct electricity at room temperature more readily than an insulator‚ but less easily than a metal. Electrical conductivity‚ which is the ability to conduct electrical current under the application of a voltage‚ has one of the widest ranges of values of any physical property of matter. Such metals as copper‚ silver‚ and aluminum are excellent conductors‚ but such insulators as diamond and glass are very poor conductors. At low temperatures
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reaction of copper metal with oxygen in the air. Using stoichiometry‚ you can predict the amount of copper oxide (CuO) that could be produced if all the copper would react. However‚ when you perform the reaction yourself‚ you will discover that only some of the copper reacts to form black copper oxide. A stoichiometric calculation will allow you to determine the amount of copper oxide produced and the amount of unreacted copper remaining. In the second part of the experiment‚ you will use the
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concentration of hydrogen peroxide. The catalyst to speed up the reaction without affecting the result will be manganese oxide. Prediction: I predict that the higher the concentration of hydrogen peroxide‚ the faster hydrogen peroxide and manganese oxide decomposes. Therefore the lower the concentration of hydrogen peroxide‚ the lower the rate that hydrogen peroxide and manganese oxide decompose. The prediction we have just made has been based on the collision theory-’Chemical reactions occur when particles
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The Spectrophotometric Analysis of Copper in a Copper Oxide Ore Abstract In this experiment‚ the mass percent of copper in an unknown copper oxide ore was determined by using a spectrophotometer and Beer’s Law. The mass percent of copper was found to be 5.12 0.14%. Introduction In spectrophotometric analysis‚ the concentration of a solute is measured in a solution by measuring the amount of light that is absorbed by the solution in a cuvette placed in a spectrophotometer. A spectrophotometer
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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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Using Clean Coal Technologies to Reduce Air Pollution ASDF SCI/275 September 4‚ 2011 Kristal Davis Fadtke Using Clean Coal Technologies to Reduce Air Pollution Air pollution is of pronounced concern in the media lately. Some of the effects of air pollution include the increase of carbon in the atmosphere which contributes to the global warming effect. The effects have been felt with record temperatures on the east coast and in the Midwestern United States this summer. One major contribution
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quantities of nitrogen oxides‚ carbon oxides‚ particulate matter‚ and hydrogen oxides into the air. One heavy duty truck emits as much as particulate matter as 150 automobiles‚ whereas one diesel train engine produces 10 times the particulate matter of a diesel truck. Electrical power plants and other industrial facilities‚ known as stationary sources‚ emit most of the particulate matter and sulfur oxides; they also emit sizable amounts of nitrogen oxides‚ hydrocarbon‚ and carbon oxides. These air pollutants
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test tube‚ (one sample and one test tube) and the physical color‚ appearance and state was defined. Water was used to test the solubility of the element. We use blue and red litmus paper to test the Metal Oxides in Group IIA. A balanced Chemical equation was written to show the reaction between oxides and water. INTRODUCTION Periodicity‚ generally related to the so call "invention" of the Periodic Table. In that table‚ Mendeleev arranges elements according to their molecular mass into
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