Smoke From Wikipedia‚ the free encyclopedia For other uses‚ see Smoke (disambiguation). Smoke from a bee smoker‚ used inbeekeeping the smoke of burning tungsten in alightbulb Smoke is a collection of airborne solid and liquid particulates and gases[1] emitted when a material undergoes combustion or pyrolysis‚ together with the quantity of air that is entrained or otherwise mixed into the mass. It is commonly an unwanted by-product of fires (including stoves‚ candles‚ oil lamps‚ and fireplaces)
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E. Biology 227 03/28/2014 Food and health How important is your health? Would you consider yourself a health conscious type of person‚ or perhaps a person who eats anything that is served? Now and days obesity is a major problem in our society‚ many factors may contribute to this problem but mostly is due to the food that we consume. Therefore‚ I would like to discuss the role of diet in our daily lifestyles‚ also some differences between a plant based diets versus a diet
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the Group IA of the long form of the Modern Periodic Table‚ viz. Lithium (Li)‚ Sodium (Na)‚ Potassium (K)‚ Rubidium (Rb)‚ Cesium (Cs) and Francium (Fr). Fr is a radioactive element. These elements are called so because they form strongly alkaline oxides and hydroxides. Electronic Configuration of Alkali Metals Each of the alkali metals has one electron in their outermost (valence) shell‚ which is just outside an inert gas core. Element Atomic No. Electronic Structure Valence Shell Electron
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is: MnO2(s)+ NH4+ + H2O(l) + e- → Mn(OH) 3 + NH3 This dry cell has a voltage of 1.5V and is robust‚ easy to store and uses and causes minimal environmental problems upon disposal. The manganese (III) is readily oxidised to insoluble manganese (IV) oxide and so immobilised‚ the small quantities of zinc are not a problem and ammonium salts and carbon are harmless. Disadvantages of the cell are that it does not contain a very large amount of electricity for its size and cannot develop very high currents
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COMMON AIR POLLUTANTS Some of the most common air pollutants can be classified as ground level Ozone‚ Particulate matter‚ Carbon monoxide‚ Nitrogen oxides‚ Sulphur oxides and Lead. Ground level Ozone – these are formed by photochemical (in the presence of sunlight) reactions in the atmosphere between oxides of nitrogen (NOx) and volatile organic compounds. Some sources of ground level ozone are industrial plant emissions‚ motor vehicle exhaust etc. Many urban areas have
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What is Global Warming? Global Warming is defined as the increase of the average temperature on Earth. As the Earth is getting hotter‚ disasters like hurricanes‚ droughts and floods are getting more frequent. Over the last 100 years‚ the average temperature of the air near the Earth´s surface has risen a little less than 1° Celsius (0.74 ± 0.18°C‚ or 1.3 ± 0.32° Fahrenheit). Does not seem all that much? It is responsible for the conspicuous increase in storms‚ floods and raging forest fires
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Workbook Results: Element Observations Element Observations Metal or Non-Metal Sodium -Lustrous -Forms oxides on surface rapidly -A soft metal -silvery-white colour Metal Magnesium -Lustrous -Forms oxides on surface -Silvery-white colour -Malleable but less than alkali metals Metal Aluminium -Silvery-white metal -Malleable but less than alkali earth metals -Forms oxide on surface Metal by observation‚ metalloid by properties Sulphur -Soft pale-yellow powder -It is odourless
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five constructive elements: top cylindrical part is top throat‚ that is necessary for the charging and distribution of burden in furnace; the highest splayed conic part is shaft‚ where the heating process of materials and the reducing of iron from oxides pass; the widest cylindrical part is belly‚ in which the process of softening and melting of the reduced iron passes; tapering conic part is bosh‚ where a reducing gas – carbon monoxide is generated‚ the cylindrical part is hearth‚ that is used to
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3 Failure Mechanism of Semiconductor Devices Contents 3.1 Reliability Factor and Failure Mechanism of Semiconductor Devices 3- 1 3.1.1 Reliability factors 3- 1 3.1.2 Failure factors and mechanisms of semiconductor devices 3- 4 3.2 Failure Mechanisms of Semiconductor Devices 3- 6 3.2.1 Time dependent dielectric breakdown (TDDB) 3- 6 3.2.2 Slow trap (NBTI) 3- 8 3.2.3 Hot carrier (AHC) 3-10 3.2.4 Soft error 3-12 3.2.5
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allowing them to be made very light and small. And while zinc air batteries can’t power large devices‚ they offer a steady flow of energy‚ making them good for use in hearing aids and other small devices. Silver Oxide * Silver oxide batteries are similar to others in size. The silver oxide allows them to store more energy. They deliver the same
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