Lemon Battery creating a battery from a lemon is a common project in many science text books. Successfully creating one of these devices is not easy. Batteries consist of two different metals suspended in an acidic solution. Copper and Zinc work well as the metals and the citric acid content of a lemon will provide the acidic solution. Batteries like this will not be able to run a motor or energize most light bulbs. It is possible to produce a dim glow from an LED. The picture at the top
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Silver can be consider as one of the most all-around metals reachable. Indeed silver is a white‚ shiny and soft metal which is often found in its natural form as a mixture with other minerals and metals. Thanks to its properties‚ silver can be consider as a multi-function produce because it can be used in the industrial sector and also as an asset. Indeed‚ silver has a monetary value when paper money is no longer of value. For example‚ in period of inflation or deflation‚ the value of silver can
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gas. ____ 3. a depiction of valence electrons around the symbol of an element ____ 4. an anion of chlorine or other halogen ____ 5. the force of attraction binding oppositely charged ions together ____ 6. the attraction of valence electrons for metal ions ____ 7. the number of ions of opposite charge surrounding each ion in a crystal Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ 8. How many valence electrons are in an atom of
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Failure Due to Aging 2. The main causes for the structural failure of an aircraft due to aging are briefly discussed as following. (a) Metallic Corrosion. The deterioration of the surface of a metal due to a chemical reaction is called metallic corrosion. This occurs because metals come in contact with electrolyte mostly contaminated water. As it arises‚ it may go undetected and result in loss of integrity of metallic structures. Since metallic corrosion is directly related to structural
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Kasey Reynolds 1 Final Exam: Starbucks Case Study External Analysis The general environment of the coffee industry is affected by many different factors. Social forces include factors such as lifestyle and cultural tastes. From their first store in Seattle‚ WA Starbucks learned that customers wanted a place to sit down and have a cup of coffee‚ while other customers wanted to get coffee quickly by utilizing a drive-thru. Both of these options have been added to appeal to a larger customer base
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However‚ when a Reynolds number reach about 300‚000‚ and the sphere is the largest one; for this case‚ the drag coefficient drops abruptly. We also found that for the same wind speed‚ the larger sphere has larger Reynolds number. The figure below illustrates the relationship between Reynolds number and drag coefficient. The results obtained from this experiment also tend to show the same relationship. Stoke’s Theory predicts that the drag coefficient decreases as the Reynolds Number less than
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Critical Review. Offshore Technology‚ ASME OMAE 1994‚ 1994. Vol. 1 & 2: p. 199 - 255. 4. Blevins‚ R.D.‚ Flow Induced Vibration‚ 2nd Edition‚ 1990‚ Van Nostrand Reinhold Co. 5. W.‚ B.P.‚ On Vortex Shedding from a Circular Cylinder in the Critical Reynolds Number Regime. Fluid Mechanics‚ 1969. Vlo. 37: p. 577-586. 6. O. M. Griffin‚ S.E.R.‚ Some Recent Studies of Vortex Shedding with Application to Marine Tubulars and Risers. Journal of Energy Resources Technology‚ 1982. Vol. 104: p. 2-13. 7. D. Lucor
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compound solution. Two Real World Applications for the Technique One real world use for recrystallization is in the creation of aspirin‚ making the substance pure and safe to be ingested. Another use of recrystallization is in metal‚ where old‚ stressed metal can be purified into a new‚ stress-free surface. References http://chemistry.about.com/od/chemistryhowtoguide/ss/recrystallize.htm http://designerdrugs.com/pte/12.162.180.114/dcd/chemistry/equipment/recrystallization.html http://www
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this element I thought it was some type of gas but it can turn it to a liquid at a certain type of liquid. But is actually a very shiny type of metal. Rubidium was discovered by Kirchoff and Bunsen in 1861 through the use of a spectroscope. Rubidium metal can be made by minimizing rubidium chloride with calcium with other substances. The cost of this metal in small quantities is approximately 25 U.S. dollars a gram. This element is obtained in the earths crust which is very useful to people. It is
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Purpose: The purpose of this experiment is to observe the colours produced when the solutions of metal ions are heated to high temperatures‚ then to explain the results in terms of the energy levels of the metal ions. Lastly‚ to use the flame colours to identify a series of unknowns. Hypothesis: Substance being tested Predicted flame colour NaCl(s) Yellow NaCl Red-Orange NaNO3 Dark Orange LiNO3 Red Sr(NO3)2 Dark Red KNO3 Blue-Indigo Ba(NO3)2 Yellow-Green Cu(NO3)2 Green Ca(NO3)2
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