THE BIOSPHERE The environment (biosphere) extends to about 20 km from the bottom of the ocean to the highest point in the atmosphere at which life can survive without manmade protective devices. Biosphere contains about 1.8 million known species. The essential requisites of life for all life forms (light‚ heat‚ water‚ food‚ and habitats) are supplied by the biosphere. Biosphere is very complex and large‚ so it is divided into smaller units (ecosystems). Each ecosystem consists of two parts: biotic
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ethanol in gasoline actually has increased greenhouse gasses and smog in American cities. Ethanol blended gasoline may be more volatile than conventional gasoline causing the production of more hydrocarbons. It is also more likely to seek through the seals and gaskets of an engine which also releases hydrocarbons into the air. Finally‚ increased corn growth has led to more water being used for its
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and known to cause lung cancer. Butadiene an industrial chemical used in rubber manufacture. Some scientists believe that of all the chemicals in tobacco smoke‚ Butadiene may present the greatest overall cancer risk. Polycyclic aromatic hydrocarbons a group of powerful cancer-causing
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Example - The example is iron combines with oxygen to form iron oxide or rust. The iron is said to have oxidized into rust. Heating natural gas - Natural gas is a fuel made of methane‚ mixed with up to 20% of other gasses such as ethane and other hydrocarbons. An example - Natural gas is a popular choice for heating and
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Architecture of the oil tanker From Wikipedia‚ the free encyclopedia Oil tankers generally have from 8 to 12 tanks.[1] Each tank is split into two or three independent compartments by fore-and-aft bulkheads.[1] The tanks are numbered with tank one being the forwardmost. Individual compartments are referred to by the tank number and the athwartships position‚ such as "one port"‚ "three starboard"‚ or "six center."[1] A cofferdam is a small space left open between two bulkheads‚ to give protection
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potential of biomass fuels in the context of global climate change: Focus on transportation fuels Performance tests of a diesel engine fueled with pentanol/diesel fuel blends Physiological tolerance and stoichiometric potential of cyanobacteria for hydrocarbon fuel production A comparison of performance of higher alcohols/diesel fuel blends in a diesel engine Integrating syngas fermentation with the carboxylate platform and yeast fermentation to reduce medium cost and improve biofuel productivity
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oxides and hydrocarbons react to sunlight. Particulate matter‚ or fine dust is characterized by their micrometre size PM10 to PM2.5. Light pollution‚ includes light trespass‚ over-illumination and astronomical interference. Noise pollution‚ which encompasses roadway noise‚ aircraft noise‚ industrial noise as well as high-intensity sonar. Soil contamination occurs when chemicals are released by spill or underground leakage. Among the most significant soil contaminants are hydrocarbons‚ heavy metals
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crude oil ever exported. The young Kingdom was now officially launched into the international petroleum industry Corporate Mission: Saudi Aramco ’s mission as an integrated international company is to engage in all activities related to the hydrocarbon industry‚ on a commercial basis and for the purpose of profit. Corporate Objective: Maximize profitability The company is continuously striving to maximize profitability by focusing on achieving maximum returns from Company assets. Maximizing
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process plant where crude oil is processed and refined into more useful products which are petroleum naphtha‚ gasoline diesel fuel etc. crude oil that is processed can be defined as a natural occurring flammable liquid which consist of mixture of hydrocarbons of different molecular weight and other liquid organic compounds. In the oil refinering‚ different products are made and are said to be bases or components‚ which are alkalyte‚ platform ate‚ penexate and COD gasoline‚ these products are stored
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75.0 7. A 4 g sample of sodium hydroxide‚ NaOH‚ is dissolved in water and made up to 500 cm3 of aqueous solution. What is the concentration of the resulting solution? A. 0.1 mol dm–3 B. 0.2 mol dm–3 C. 0.5 mol dm–3 D. 1.0 mol dm–3 8. A hydrocarbon contains 90% by mass of carbon. What is its empirical formula? A. CH2 B. C3H4 C. C7H10 D. C9H10 9. What amount of NaCl (in moles) is required to prepare 250 cm3 of a 0.200 mol dm–3 solution? A. 50.0 B. 1.25 C. 0.800 D. 0.0500 10. Assuming
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