precipitate was cloudy and turned dark. Part III: Formation of Copper oxide Observations of Copper (II) hydroxide when heated: Copper (II) hydroxide when heated turned very dark. It turned dark blue and had black specks floating around in the solution. After being heated for a time the aqueous solution turned gray and a black precipitate was formed. Part IV: Formation of copper (II) sulfate Observations of copper (II) oxide when reacted with 6mL of 3 Moles of Sulfuric acid: the black precipitate
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paralyses‚ failure of the liver and kidneys‚ and can harm the reproductive system in both male and female animals. Vanadium can also cause DNA alterations. Vanadium also has other common forms such as Vanadium Oxide and Vanadium Pentoxide. Vanadium Oxide is more toxic than Vanadium. Vanadium Oxide is most commonly found in sulfuric acid. Vanadium Pentoxide is created when you weld vanadium in its pure state. The gases from Vanadium Pentoxide can cause bronchitis‚ pneumonia and in rare cases death.
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clean rainwater is slightly acidic. This is because it has carbon dioxide from the air dissolved in it. Rain is only called acid rain if it is more acid than normal. The main causes of acid rain are gases called sulphur dioxide (SO2)‚ and nitrogen oxides (Nox). These dissolve in the water in the atmosphere to make acids. Bright sunlight speed up the process. This makes the acid rain problem worse. (6) Acid deposition is anything acidic that comes down to the ground out of the air. Dry acid deposition
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chemical reagents‚ along with mixed oxides produced by calcination of these products (HCC and HSC) were mixed with titanium isopropoxide to obtain hydroxide-TiO2 compounds (HCC-TiO2 and HSC-TiO2) to test their photocatalytic activity compared with solutions of 10 mg/L phenol (120 min‚ λUV=254 nm‚ 4 and 8 w). The materials obtained were characterized by different techniques. The results of the characterization show that TiO2 was incorporated into the mixed oxides of the calcined hydrotalcite forming
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Theory What is rust? Rust is the common name of a compound‚ iron oxide. Iron oxide‚ the chemical Fe2O3‚ is common because iron combines very readily with oxygen -- so readily‚ in fact‚ that pure iron is only rarely found in nature. Iron (or steel) rusting is an example of corrosion -- an electrochemical process involving an anode (a piece of metal that readily gives up electrons)‚ an electrolyte (a liquid that helps electrons move) and a cathode (a piece of metal that readily accepts electrons)
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Acid rain is considered precipitation in the form of rain‚ snow‚ or fog. It is not regular precipitation. It is precipitation that is polluted by acid. Emissions of sulfur dioxide and nitrogen oxide into the atmosphere cause this precipitation to become acidic. These emissions are released into the atmosphere by human activity‚ such as automobiles‚ industries‚ and electrical power plants that burn fossil fuels like coal and oil. When these gases are released‚ they mix with water vapor in the clouds
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surface micromachining forms the basis of the micromotor fabrication process. In this process‚ LPCVD heavily phosphorus-doped polysilicon is used for the structural parts. LPCVD silicon nik d e is used for electrical isolation‚ and CVD low-temperature oxide is used as the sacrificial material. The fabrication process impacts the performance characteristics of the micromotor through the reproduction accuracy of the design geometry and through the modification of the characteristics of contacting surfaces
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Chemistry Assignment Name : Lorna Ng Xin Mei Student ID : 1000620 Group Members’ Name: Sim Koshin Chen Chui Ting Bhindia Pooja Rayel Title : Paper Chromatography Photochemical Smog Lecturer’s Name : Ms. Usha Nanthini Table of Content No. | Content | page | 1. | Paper Chromatography | | | 1.1 Definition | | | 1.2 Background | | | 1.3 Rf Values | | | 1.4 Principles of Paper Chromatography | | | 1.5 Procedure
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into thin wafers with a diamond saw. The wafers are then polished in a number of steps until their surface has a perfect mirror-like finish. The silicon wafer is covered with a layer of insulating silicon oxide. A covering film of protective material is put on top of the insulating silicon oxide. This material‚ a bit like the film in any ordinary camera‚ is sensitive to light. UV-light is shone through a mask and onto the chip. On the parts of the chip that are hit by light‚ the protective material
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control the air pollution • The automobiles must be designed with emission control system • The wastes must be removed and recycled in the industrial plants and refineries • Plants like pinus and ribes need to be planted to metabolize the nitrogen oxides and other pollutants • Timely servicing of the car helps to keep it in a good condition‚ and also minimizes fuel exhaustion • Using public transportation helps to prevent the air pollution • Using alternative energy sources like solar energy‚ hydroelectric
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