were mixed and shaked in a 4-inch test tube. The mixture was centrifuged‚ and the supernate was decantated into a test tube. Separate drops of the supernate was tested for presence of Fe2+‚ Ag+ and Fe 3+ in three different test tubes: Ions Test Reagent Observation Fe2+ 0.10M K3Fe(CN)6 Prussian blue precipitate Fe 3+ 0.10 M KSCN Blood red solution Ag+ 1.00 M HCl White precipitate Copper (II) – Ammonia System 1.00 M NH3 was added dropwise to a test tube filled with 1ml of 0.1 M CuSO4. Contents
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gravity. Particles with different density and masses are settled at different rates in a tube which are response to gravity. Centrifuge is an instrument which can spin carrier vessels at high rotation speed and very high centrifugal force to allow centrifugation. The centrifugal force generated is proportional to the rotation rate of the rotor and the distance between the rotor centre and the centrifuge tube. There are three general classes of centrifuges: low speed‚ about 5000 rpm‚ high speed machine
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Test Tube Baby? The crowded Washington D.C. airport reekedsmelled of greasy fast food. I sat beside my mom in the food court‚ eating a slice of pizza from one of the many vendors. We had just been visiting the city for my mom’s work. Our flight was scheduled to depart in about a half an hour. “Alright‚ stop eating and listen to me‚ because I have something really important to tell you‚” said my mom. “Okay? What is it?” I asked. “Your father and I‚ well it was very difficult for us
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The ‘Filling Station’ by Elizabeth Bishop is a very interesting poem. It is fairly short and devoid of strong emotions. To give a brief synopsis of the poem‚ a third person omniscient narrator is describing a father and his ‘several quick and saucy sons’ running a filling station. She moves from describing them to describing the station itself‚ complete with furniture‚ a ‘dirty dog’ and plants. The poem then changes tone to reflection of why the station is the way it is‚ and is concluded by a
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Advertising companies pay other companies for showing their advertisements‚ therefore allowing these companies to offer “free” services to the public. Without advertising companies‚ we would not have a free yahoo or Gmail account‚ and also “free” channel stations like ABS-CBN or GMA-7. It engenders creativity by “forcing” companies to male good and worth-to-look-at advertisements in order for potential costumers to be attracted to the product(s) and/or service(s) they are selling/offering. It encourages
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“Train Stations and Barrooms” Being faced with difficult decisions is a major obstacle in the lives of adults. After conversing‚ many of these decisions are resolved in a favorable outcome that works for both adults. In “Hills like White Elephants‚” the two adults‚ an American man and the girl‚ discuss a major issue in their lives. This controversy pertains to a potential operation the woman may choose to undergo. The train station and the barroom emphasizes what is being discussed between the two
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The aseptically inoculate nutrient broth tubes A and B did not have any microbes inoculated into the tubes so it should not have been cloudy and that was what was seen. Tube C should have been cloudy because it had E. coli inoculated into the nutrient broth and that was also seen. A simple streak was also performed and it looks has if the loop went over previous streaks which should not have been done. A complex streak was also done. No colonies grew towards the end of the streak‚ this could be due
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COMPOSITES COURSEWORK DESIGN AND ANALYSIS OF A LAMINATED COMPOSITE TUBE ABSTRACT This report details the process for the design of a composite laminate tube‚ the software package ’MathCAD’ was used to determine a lamina design with a configuration that avoids mechanical failure under loading conditions. It was also used to obtain twist angles and maximum stresses for specific lamina wind up angles. The report will provide analysis of the methods used to obtain these criteria. AIM Use a Mathcad
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Enterprise who owned the Spetrol station located along the BPK Highway. Spetrol was acknowledged as one of the big players in domestic petroleum products industry. However‚ Jamel who Mat Jon’s nephew was on boarded of the operations of the pump station and he did not participate in the business operation since he was in his post retirement years. At the start‚ the business was doing convincingly well‚ this success was helped by the strategic area that petrol station been located. Nevertheless‚ the
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Hydroelectric Generating Station Sustainability is the capacity to maintain. Hydroelectricity is a highly sustainable way of generating electicity. With many advantages‚ hydroelectricity will carry us sustainably‚ meeting our needs for many‚ many years to come. Economically hydroelectric stations are extremely sustainable. Generally speaking it costs anywere from $100 Million dollars to $400 Million dollars to build one station‚ depending of size. The largest dam in the world (The
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