advantages such as sufficient output‚ safe and reliable operation‚ short construction period‚ and low installation cost ect. 2. The design of cyclone reburning chamber in furnace decreases dust contained in the flue gas. At the same time‚ incandescent carbon black particles burns further‚ enhancing the boiler thermal efficiency‚ and decreasing gas blackness‚ as a result‚ the gas emission concentration meets the requirements of grade A environmental protection area. 3. The grate employs the technology
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Cobalt Wedding Bands Review Cobalt wedding bands are crafted having a super strong metal that mixes an incredibly higher level of sturdiness using the vibrant reflective appearance of white gold or platinum. Using the many pros cobalt engagement rings have to give you‚ cobalt rings might even at some point exceed tungsten and titanium wedding rings. To discover if this sounds like the best metal for the wedding ring‚ and also to begin to see the benefits and drawbacks of cobalt plus how cobalt
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in the four solvents‚ water seems to be the best choice as a recrystallizing solvent. B. DECOLORIZING A SOLUTION OF IMPURE ACETANILIDE AND HOT FILTRATION 2. 1.5637 grams of impure acetanilide 5. 38 ml total solvent volume 7. Added tip of carbon black to mixture and mixture almost boiled over! 8. 28 ml total solvent volume C. ISOLATING THE RECRYSTALLIZED PRODUCT WITH VACUUM FILTRATION 2. Chilled crystals in ice bath for 19 minutes. collected flaky white crystals Mass of watch glass
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as face creams‚ hand lotions‚ and also in other skin products to reduce facial blemishes. Sulfur is an essential element within the human body‚ but it is found in smaller amounts compared to the more dominant elements such as oxygen‚ hydrogen‚ and carbon. Sulfur is also found in matches and gunpowder.
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N12/4/CHEMI/SPM/ENG/TZ0/XX 88126104 CHEMISTRY standard level Paper 1 Friday 9 November 2012 (afternoon) 45 minutes INSTRUCTIONS TO CANDIDATES • Do not open this examination paper until instructed to do so. • Answer all the questions. • For each question‚ choose the answer you consider to be the best and indicate your choice on the answer sheet provided. • The periodic table is provided for reference on page 2 of this examination paper. • The maximum mark for this examination
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that 10% of modern waste was plastics‚ although estimates vary according to region. Meanwhile‚ 50-80% of debris in marine areas is plastic. They also contribute great effect on global warming especially if they are incinerated because it increases carbon emissions. So how can we continuously use plastic without compromising our environment? On the other hand‚ vegetables like potato‚ tapioca and corn also contain polymers from starch which can be used as alternative materials for plastic. Vegetables
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through the system‚ to simulate lightning storms believed to be common on the early earth. Analysis of the experiment was done by chromotography. At the end of one week‚ Miller observed that as much as 10-15% of the carbon was now in the form of organic compounds. Two percent of the carbon had formed some of the amino acids which are used to make proteins. Perhaps most importantly‚ Miller’s experiment showed that organic compounds such as amino acids‚ which are essential to cellular life‚ could be made
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Results and Calculations Figure 1: Stress-Strain Curve – Steel 1045 Figure 2: Stress-Strain Curve – Mild Steel Figure 3: Stress-Strain Curve – Aluminium Table 1: Physical Properties of Specimens Material Initial Gauge Thickness (mm) Final Gauge Thickness (mm) Initial Gauge Width (mm) Final Gauge Width (mm) Initial Gauge Length (mm) Final Gauge Length (mm) Initial Cross-Sectional Area (mm2) Final Cross-Sectional Area (mm2) Steel 1045 6.0 5.8 12.3 11.7 50.2 57.9 73.8 67.9 Mild Steel 6
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2.3 Magnesia-Doloma Refractories: The MgO-CaO system is remarkable for the high liquidus and solidus temperatures over the complete range 100% MgO- 100% CaO‚ as the eutectic for the CaO–MgO binary system occurs at 2370 ºC [3‚ 52]. MgO–CaO bricks are high-value refractories composed of lime (CaO) and periclase (MgO). MgO –CaO refractories has some advantageous and disadvantageous compared to MgO and CaO refractories (Table 1). Table 1 Typically‚ these refractories are composed by 50-80 wt. % of
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ELECTROPHILIC ADDITION PURPOSE The purpose of this lab is to learn how to synthesize 2-methyl-2-butene into 2-bromo-2-methylbutane using addition of hydrogen bromide. THEORY Chemical Compound Molecular Formula Molecular Weight Boiling Point Melting Point Density Amylene CH3CH=C(CH3)2 70.13 g/mol 36 oC -134 oC 0.662 g/ml Hydrobromic Acid HBr 80.91 g/mol 126 oC -11 oC 1.490 g/ml 2-Bromo-2-MethylButane C5H11Br 151.05 g/mol 107 oC 1.18 g/ml Sodium bicarbonate NaHCO3 84.007 g/mol Decomposes
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