were isolated from plants or animals were called organic‚ while those extracted from ores and minerals were inorganic. Organic chemistry is often defined as the chemistry of carbon. But this definition would include calcium carbonate (CaCO3) and graphite‚ which more closely resemble inorganic compounds. We will therefore define organic chemistry as the study of compounds‚ such as formic acid (HCO2H)‚ methane (CH4)‚ and vitamin C (C6H8O6)‚ that contain both carbon and hydrogen. The chemistry of carbon
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deposit of graphite was discovered near Grey Knotts in England during the first half of the 1500’s. Local residents cut the graphite into sticks and used them to mark their sheep. The graphite was misidentified as lead‚ a word that has been connected with pencils ever since‚ even though modern ones don’t contain any lead. Graphite had great military value as a liner of moulds for cannonballs‚ so the mine was quickly taken over by the English government. Workers had to smuggle graphite out of the
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(parallel circuit) graph was that of a power function. Higher clay based pencils (2H) had higher resistance to that of higher graphite based pencils (6B)‚ and temperature did not greatly affect the resistance. The reasons as to why diamond does not conduct electricity were also found. Aim: To investigate the effect that different factors have on pencil lead (graphite) resistance. The factors tested include‚ pencil lead type (HB‚ 2B...)‚ temperature‚ length and cross-sectional area. Hypothesis:
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found versions of carbon are graphite and diamonds. Graphite is not only used for pencil lead‚ but many other industries use graphite in their products. One major use for graphite is in the steel industries. The steel companies mix graphite in with the iron to form a more efficient and stronger metal. Graphite can also be used as a dry lubricant. In places where a wet lubricant like oil cannot be used‚ finely ground graphite powder works great for these places. Graphite is the only nonmetal that is
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Introduction: 1) This report considers the potential purchase of the sodium chlorate producing plant in Collinsville‚ Alabama by Dixon Corporation from American Chemical Corporation in October 1979. The reason for this stems from the fact that American Chemical Corporation was attempting at the time to buy a controlling stake in Universal Paper Corporation‚ but the management of Universal contested this on the basis that it would be anti-competitive‚ given that they were both producers of sodium
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Allotropes are the existence of an element in more than one form. Carbon is one of the elements that contain many allotropes. Each allotrope of carbon has its own different properties. The allotropes of carbon are diamond‚ graphite‚ fullerenes‚ carbon nanotubes‚ carbon nanobuds‚ amorphous carbon‚ glassy carbon‚ lonsdaleite‚ and carbon nanofoam. Diamond is the best know allotrope of carbon. It is the hardest known natural mineral which makes it very rough. In the structure of the diamond‚ each carbon
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SPE 167543 Wellbore Stability Management In Depleted And Low Pressure Reservoirs Fekete Paul O.‚ Dosunmu Adewale‚ Anthony Kuerunwa‚ Ekeinde Evelyn B.‚ Anyanwu Chimaroke‚ and Odagme Baridor S.‚ Dept. of Petroleum and Gas Engineering‚ University of Port Harcourt‚ Nigeria Copyright 2013‚ Society of Petroleum Engineers This paper was prepared for presentation at the Nigeria Annual International Conference and Exhibition held in Lagos‚ Nigeria‚ 30 July–1 August 2013. This paper was selected for presentation
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Atomic Absorption – Electrothermal Atomisation/Graphite Furnace Atomic Absorption Spectrometer (GF-AAS) Introduction Atomic Absorption relies on the principle that each atom absorbs light of a particular wavelength‚ and hence at that wavelength the quantity of that absorption is proportional to the elements concentration. The first technique used in this analysis was Electrothermal Atomisation‚ known as Graphite Furnace-AAS. The components of a Graphite Furnace AAS are similar to that of Flame
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Immigration Pro’s and Con’s It is historically acknowledged that the authentic Native-Americans are the Indians and there is documented theory that their origination possibly evolved from Asia. From the first settlers‚ throughout the establishment of the 13 colonies and the growth of the United States‚ state-by-state‚ America has truly become the “Melting Pot”‚ a nation of immigrants. The United States Census in 2007 allocates that more than 38 million of the nation’s residents were foreign-born;
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The Complete Works of William Shakespeare; [Abridged] Toward the end of April‚ I took the time to watch a hilarious play at Lonestar College called “The Complete Works of William Shakespeare; [Abridged]” This play was not like anything I have ever seen‚ and definitely not what I had been expecting. “The Complete Works…” took thirty-seven of Shakespeare’s best sonnets and tragedies such as “Hamlet” and “Othello”‚ and transformed them into a wonderful show that takes on aspects of a cooking show
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