← Understand the manufacture of sulphuric acid. ← Synthesise the manufacture of ammonia and its salts. ← Understand alloys. ← Evaluate the uses of synthetic polymer. ← Apply the uses of glass and ceramics. ← Evaluate the uses of composite materials. ← Appreciate various synthetic industrial materiala. (H4SO4) ← USES OF SULPHURIC ACID 1. Sulphuric acid is used to produce chemical fertilizer such as ammonium sulphate and potassium sulphate‚ which are highly soluble in water
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Studies by psychologists Alloy and Abramson (1979) and Dobson and Franche (1989) suggested that depressed people appear to have a more realistic perception of their importance‚ reputation‚ locus of control‚ and abilities than those who are not depressed. The popular claim: is that depressed people believe false ideas about themselves and others. In other words‚ they are self-deceived and out of touch with reality. This kind of self-deceptive thinking is alleged to be a factor distinguishing depressed
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magazine‚ there were eight giant media companies dominating the US media. Most people get their information from these few sources‚ making it difficult to hear fresh and untainted news. These companies include: -Disney (market value: $72.8 billion) -AOL-Time Warner (market value: $90.7 billion) -Viacom (market value: $53.9 billion) -General Electric (owner of NBC‚ market value: $390.6 billion) -News Corporation (market value: $56.7 billion) -Yahoo! (market value: $40.1 billion) -Microsoft (market
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as an iron carbon alloy with a minimum of 10% chromium content. The name stainless steal comes from the fact that it does not rust or corrode which makes it stainless. There are many different types of grades and surface finishes to suit the environment where the metal will be placed. Stainless steel is commonly used in balustrades‚ watch bands and household appliances. CAST IRON Cast iron is usually referred to as grey cast iron and identifies a large group of ferrous alloys. Cast iron is hard
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reference can be found by Profs John Lienhard online http://web.mit.edu/lienhard/www/ahtt.html Casting Methods • Sand Casting • Investment Casting • Die Casting High Temperature Alloy‚ Complex Geometry‚ Rough Surface Finish High Temperature Alloy‚ Complex Geometry‚ Moderately Smooth Surface Finish High Temperature Alloy‚ Moderate Geometry‚ Smooth Surface Sand Casting Sand Casting Description: Tempered sand is packed into wood or metal pattern halves‚ removed form the pattern‚ and assembled with
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will the software be delivered? Do customers have the right of return? How do they calculate 30% for the sale of software and 70% for the internet service? c: No‚ there is no evidence shows that AOL would sell software separately so soft has no standard alone value. In this case‚ AOL cannot recognize any revenue until they delivered services for customer. (2) a: Persuasive evidence of an arrangement exists. Do they have enough evidence to show that they will make deal with
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Environmental and economic life cycle assessment of aluminum-silicon alloys production: a case study in China. Authors: Hong‚ Jingmin1‚2 Zhou‚ Jing2 Hong‚ Jinglan3 hongjing@sdu.edu.cn Xu‚ Xu3 Source: Journal of Cleaner Production; Mar2012‚ Vol. 24‚ p11-19‚ 9p Document Type: Article Subject Terms: *ALUMINUM-silver alloys *PRODUCTION (Economic theory) *ECONOMIC impact *CASE study (Research) *DEMAND (Economic theory) *RAW materials *CONSUMPTION (Economics) Geographic Terms: CHINA
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minute routine/demonstration of individual moves in sequence. 5. Unit Assessment: 1. Journal AFL – during the unit‚ mid-way point (x/20) AOL – at final submission (x/20) 2. Presentation AOL Grade
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(FeO(OH)·nH2O) and siderite (FeCO3) Alloys: * homogeneous mixtures of metals or metals and non-metals * examples include brass (65% copper‚ 35% zinc)‚ solder (63% tin‚ 37% lead)‚ bronze (85% copper‚ 15% tin) * usually alloys resist corrosion‚ and can be harder than either of the metals * the added species interferes with the metallic lattice of cations in the pure metal‚ and as a result the physical properties of the metal are altered * steels are alloys of iron‚ with different quantities
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aluminum-zinc alloy with excess 6M hydrochloric acid. The purpose of this experiment is to determine the atomic mass of each metal and the percent composition of a known mass aluminum-zinc alloy by determining the moles of H2 gas formed. Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g) 1 mole of H2(g) is produced for every 1 mole of Zn(s) 2. 2Al(s) + 6HCl(aq) → 2AlCl3(aq) + 3H2(g) 3 moles of H2(g) is produced for every 2 moles of Al(s) Both the aluminum and the zinc contained in the alloy react to produce
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