Pure aluminium is a relatively soft‚ silvery white metal. When exposed to air‚ a thin coating of Aluminium oxide gives it a dull lustre. It is three times less dense than water‚ and has great strength when alloyed‚ it doesnt rust and has high electrical conductivity‚ and Aluminium is also ductile‚ making it a very useful metal. Aluminium readily makes alloys with copper‚ zinc‚ magnesium‚ manganese and silicon. Aluminium foil is 92-99% pure aluminium. Other uses of aluminium alloys include computers
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Review of Relation Extraction Methods: What Is New Out There? Natalia Konstantinova(B) University of Wolverhampton‚ Wolverhampton‚ UK n.konstantinova@wlv.ac.uk Abstract. Relation extraction is a part of Information Extraction and an established task in Natural Language Processing. This paper presents an overview of the main directions of research and recent advances in the field. It reviews various techniques used for relation extraction including knowledge-based‚ supervised and self-supervised methods
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Separation of Acidic‚ Basic and Neutral Substances by Extraction KEYWORDS Solubility‚ density‚ organic layer‚ aqueous layer‚ drying agent‚ protonation‚ recrystallization‚ neutralization‚ extraction ABSTRACT: The purpose of this experiment is to separate the substances in the acidic mixture and identify each constituent in the mixture that were individually separated using extraction. Three reaction tubes were used in the experiment. An acidic mixture containing benzoic acid‚ naphthalene‚
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Describe an alternative method for evaporation of the CH2Cl2 Can be steamed and then rinsed with ethyl acetate for several hours‚ and then rinsed with water‚ or can be soaked in a bath of CO2 and run through water‚ making carboxylic acid. (2) Caffeine: (4) Repeated exposure can produce general deterioration of health by an accumulation in one or many human organs. First Aid Measures: Eye contact - Immediately flush eyes with plenty of water for at least 15 minutes. Cold water may be used. WARM
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Intact Dilation and Extraction Intact dilation and extraction which is also known as intact dilation and evacuation‚ intrauterine cranial decompression and most commonly but controversially known as partial birth abortion has created ethical waves in medicine over the years. This specific procedure has been a primary focus of many politicians and religious groups although it only makes up approximately .08% of abortions‚ or approximately 1‚032 per year‚ based on research done in the year 2006
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EXTRACTION OF COPPER FROM OXIDISED COPPER ORE Aim: To analyse how copper is obtained from oxidised copper ore using the processes of leaching‚ solid-liquid separation‚ displacing and electrowinning. Method: Refer to ‘Extraction of Copper from oxidised Copper Ore’ document pages 1-2 Results: Leaching: The blue particles in the copper ore which is copper was dissolved in the sulphuric acid and the solution turned into a blue colour. There was also sediment that was floating around
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Results and Discussion A. Table of Result of Extraction Weight (g) Tea Leaves 5.5783 Crude Caffeine 0.0246 Empty Beaker 117.5350 Beaker + Crude Caffeine 117.5596 The table above shows the weight of the sample tea leaves‚ the crude caffeine content in the sample‚ the empty beaker used in the extraction‚ and the beaker with the crude caffeine. It is induced from there that for that amount of sample tea leaves‚ which is equivalent to three bags of Nature’s Pride Tea; there is a 0.0246
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Gatsby Essay In this extract from the novel “The Great Gatsby” by F. Scott Fitzgerald‚ the corruption and decay of the society is highlighted by the uses of various elements such as conflict‚ setting‚ characterisation and imagery. In first person‚ Nick shows his conflicting thoughts of what he thinks of the party. He feels the party and the people there are vulgar‚ yet appealing. This contradicts the way in which introduces himself – a non-judgemental who in most cases looks over the situation.
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Lab #1 Extraction and Thin Layer Chromatography Kaya Gaudet 6784928 January 9‚ 2013 Line Structure References BenzophenoneBiphenylBenzoic Acid Extraction: A process used to separate different compounds in a mixture based on their solubility in an immiscible substance. Usually an aqueous and organic phase are used. During extraction the desired compound moves one phase and leaves the unwanted substance behind. Extraction normally has to be done a few times to leave all of the impurities
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Extraction of Caffeine from Tea Leaves using Dichloromethane (CH2Cl2) Abstract The extraction of caffeine (C8H10N402) was done in two parts. The first procedure used was solid-liquid extraction which was done by boiling the tea leaves in 100 ml. distilled water for 5-10 minutes. The filtrate was acquired and was extracted again by liquid-liquid extraction using dichloromethane (CH2Cl2). The combined DCM (CH2Cl2) was washed and dried to yield crude caffeine. The crude caffeine was purified
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