Once the aspirin is prepared‚ it is isolated from the reaction solution and then it is purified. The aspirin is insoluble in cold water‚ and it is isolated by filtering the chilled reaction solution. Purification is essential to remove any unreacted salicylic acid and acetic anhydride as well as the acetic acid product and phosphoric acid. Acetic anhydride is caused to decompose by the addition of water once the formation of aspirin is complete. C4H6O3 (Acetic anhydride) + H2O (Water) ------------------------->
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contagious and cannot be spread directly from person to person. There must be a person-tomosquito-to-another-person pathway. What are dengue fever symptoms and signs? After being bitten by a mosquito carrying the virus‚ the incubation period ranges from three to 15 (usually five to eight) days before the signs and symptoms of dengue appear in stages. Dengue starts with chills‚ headache‚ pain upon moving
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STRENGTH OF MATERIAL TENSILE TESTING OF METALS STRENGTH OF MATERIAL TENSILE TESTING OF METALS OBJECTIVE : Tension test is carried out; to obtain the stress-strain diagram‚ to determine the tensile properties and hence to get valuable information about the mechanical behavior and the engineering performance of the material… INTRODUCTION: A tensile test‚ also known as a tension test‚ tests a material’s strength. It’s a mechanical
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Composite Materials A composite is a combination of two or more materials bonded together to gain some overall necessary goods. Types of composite include: laminated materials fibre composites particle composites. A laminate contains thin pieces of material fused together. Common examples are plywood and car windscreens. Wood is durable when exposed to a ductile force equivalent to its grain‚ but if the strength is across the particle it splits simply. A windscreen is made in a parallel way; two
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MATERIAL FALLACIES MATERIAL FALLACIES • Fallacies of Relevance – irrelevant premises (diversion) • • • • • The appeal to populace (ad populum) The appeal to pity (ad misericordiam) The appeal to force (ad baculum) The argument against person (ad hominem) Irrelevant Conclusion • Fallacies of Defective Induction – weak premises • • • • The argument from ignorance (ad ignorantiam) The appeal to inappropriate authority (ad vericundiam) False Cause Hasty Generalization MATERIAL FALLACIES • Fallacies
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| | | Description of Materials | Unit | Unit Cost | 1. FOUNDATION‚ CONCRETE COLUMNS‚ BEAMS AND CONCRETE HOLLOW BLOCKS WALLS | | | Portland Cement | BAG | 212.00 | Sand (S-1) | CU.M. | 3200.00 | Gravel or Crushed Stones (G-1) | CU.M. | 600.00 | Earth Fill | CU.M. | 2700.00 | C.H.B. 4" THK | PIECE | 7.50 | Steel Reinforcing Bars‚ Deformed | | | 10mmX6.00 meters | PIECE | 121.00 | 12mmX6.00 meters | PIECE | 173.00 |
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RAW MATERIAL AND SOURCES OF AVAIBILITY The paint industry is raw material intensive. Paint involves the mixing of various raw materials in various proportions. The raw materials are of a wide variety. On an average‚ raw materials account for 60% of net sales (industry average). In case of small-scale units it forms up to 70% of the net sales. Raw materials are divided into three major groups‚ namely‚ pigments (titanium dioxide‚ zinc oxide etc.)‚ solvents (mineral turpentine) and resins and
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owner has the apparel designed and silk-screened and then negotiated with two clothing stores to carry the clothing. The underlying foundation of ReHabiliments‚ and its clothing line is based upon the principle of harmony - harmony of thought‚ harmony of purpose‚ and harmony in humility. When people are of one mind‚ they are supported in their purpose and are accepted despite their weaknesses. By purchasing "ReHabiliments‚" consumers make a conscientious decision to become an integral member
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Neolithic period or the New Stone Age is the period when humans started to domesticate animals and plants to settle in fixed dwellings. As food supply becomes assured‚ many groups started to shift from hunting to farming. Previously wandering hunters settled down to organize community living in villages and cultivated fields (Violatti). The Temple of Olympian Zeus and Stonehenge both represent this revolutionary period of the Neolithic period. Each of the structures represents the revolutionary innovations
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Sept. 2‚ 2014 Date Submitted: Sept. 2‚ 2014 EXPERIMENT NO. 1 EXTRACTION AND ISOLATION OF PROTEINS Background of the experiment Pure proteins are not readily available for study or use. There are certain methods that should be done in order to obtain proteins from its sources. The objective of this experiment is to isolate casein from milk and albumin from egg and to identify and explain the principles behind the methods employed for protein extraction. Results and Discussion There are
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