The natural gas industry in Trinidad and Tobago began with the discovery of gas on land at Mahaica in 1955 by Dominion Oil‚ however the first major natural gas discovery (One Trillion Cubic Feet (Tcf)) was off the East coast of Trinidad by Amoco in 1968 in the Teak offshore field. This was followed up in 1973 by a 2 Tcf find in the South East Galeota acreage. There was however production and utilization of gas before this date. Although the dates referred to mark the first large finds of natural
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with the fall of temperature but it is not necessary in all cases. However we must follow two behaviours: In endothermic process‚ solubility increases with the increase in temperature and vice versa. For example: solubility of potassium nitrate increases with the increase in temperature. In exothermic process‚ solubility decrease with the increase in temperature. For example: solubility of calcium oxide decreases with the increase in temperature. Gases are more soluble in cold
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C2.1.1 Structure and bonding a) Compounds are substances in which atoms of two or more elements are chemically combined. b) Chemical bonding involves either transferring or sharing electrons in the highest occupied energy levels (shells) of atoms in order to achieve the electronic structure of a noble gas. c) When atoms form chemical bonds by transferring electrons‚ they form ions. Atoms that lose electrons become positively charged ions. Atoms that gain electrons become negatively charged
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Life cannot exist without energy Energy flows in one direction thru the ecosystem eg. Green plants (autotrophs) harness light energy from the sun. An another consumers eat the autotrophs and other consumers. This flow of energy is a consequence on the laws of thermodynamics‚ were in sense that energy can neither be stored or created‚ but is transferred from one type to another. At which sun is converted to heat. The transfer of energy in an ecosystem‚ can be showed in a number of ways eg as a
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humans with likely tragic effects. In Caspian Sea‚ about 60% of untreated wastewater is released into it‚ also in Africa and Indo-Pacific‚ the volume is around 80 – 90%. From analysis‚ it has been estimated that influx of Nitrogen in the form of Nitrate or Ammonium that will run off into the marine environs would experience an increase to 14%. It has also been emphasized that hazardous substances that are very toxic to humans and animals which are tenacious in the environment and also liable to bio-accumulate
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used. Silver nitrate is used to precipitate the chloride ions in the unknown‚ which can be measured to determine the percent composition of chloride in the unknown. The results from these three major analyses helped to draw the conclusion that the unknown is in fact [Co(NH3)6]Cl3. -2.0 Synthesis/Analysis of Cobalt-Amine-Halide Compund (Procedure 1‚ pgs 16-7)) A cobalt (III) amine halide compound was prepared by making a solution of cobalt (II) chloride hexahydrate and ammonium chloride (NH4Cl)
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Daly‚ A. and P. Zannetti. 2007. An Introduction to Air Pollution – Definitions‚ Classifications‚ and History. Chapter 1 of AMBIENT AIR POLLUTION (P. Zannetti‚ D. Al-Ajmi‚ and S. Al-Rashied‚ Editors). Published by The Arab School for Science and Technology (ASST) (http://www.arabschool.org.sy) and The EnviroComp Institute (http://www.envirocomp.org/). Chapter 1 An Introduction to Air Pollution – Definitions‚ Classifications‚ and History Aaron Daly and Paolo Zannetti The EnviroComp Institute
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the side of the test tube. A sample reaction is shown below. The Benedict’s Test and Chromic Acid Test both work in similar fashion as the Tollen’s Test. In the Benedict’s Test‚ cupric salts are used as the oxidizing reagent rather than the silver nitrate. An aldehyde is identified by a brick-red precipitate‚ while ketones have no reaction. The Chromic Acid Tests‚ sometimes known as the Bordwell-Wellman Test‚ uses chromic acid to oxidize the aldehydes to carboxylic acids. Ketones do not react. When
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environmental management. Elsevier‚ New York Hillman TJ‚ Quinn GP (2002) Temporal changes in macroinvertebrate ISO 7150-1 (1984) Water quality—determination of ammonium. International Organization for Standardization‚ Geneva ISO 7828 (1985) (BS EN 27828: 1994) Standardization‚ Geneva ISO 7890-1 (1986) Water quality—determination of nitrate ISO 15705 (2002) Water quality—determination of the chemical oxygen demand index (ST-COD) Standardization‚ Geneva ISO 5815-1 (2003) Water quality—determination
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the equilibrium. In part 1 ‚ we observed the shift in equilibria of two aqueous solutions of Copper and Ammonia then Nickel and Ammonia. In part 2‚ we focused on cobalt ions in the presence of chloride ions as well as the precipitation of silver nitrate and sodium carbonate. In the last part of the experiment we utilized a solution of Cobalt chloride and compared the color at room temperature and then again in a container of boiling water. Physical Data: No physical Data was applicable to the experiment
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