Nanotechnology : Side Effects of nanotechnology in cosmetics brand The basic definition of nanotechnology is the engineering of functional systems at the molecular scale. Both current work and concepts are cover and more advance in this technology (Acknowledging your sources‚ n.d.). It is also refers to construct items from the bottom up due to the ability of projected for higher performance using the modern technology and tools. Nanotech is also a study of atom and molecules around us that we
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Illustrating the Oxidation States of Mn & V © KCl http://hk.geocities.com/fatherofchemistry Procedure © KCl http://hk.geocities.com/fatherofchemistry Discussion Part A: Making Mn(VI) from Mn(VII) and Mn(IV) 1.> Explain why only one of the three mixtures reacted to give green Mn(VI). [ANS] By Le Chatelier’s Principle‚ only the alkaline medium will shift the equilibrium to right and yield green MnO42-. 2.> What happened when acid was added
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References: 1.www.eetimes.com‚ 2.www.EFY.com. ----------------------- [pic] A scanning electron microscope image (top) shows an array of zinc oxide nanowires. Middle image shows a schematic of how an AFM tip was used to bend nanowires to produce current. Bottom image depicts output voltages produce by the array as it is scanned by the probe.
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Web. 18 Feb 2014. <http://www.azom.com/article.aspx?ArticleID=2305>. "Sodium Sulfate Applications in the Past‚ Present‚ and Future." Sodium.org. Web. 18 Feb 2014. < http://www.sodiumsulfate.org/Sodium-Sulfate-Uses.html>. "Zinc Coatings - How They Work." Zinc. International Zinc Association‚ 2011. Web. 18 Feb 2014. <http://www.zinc.org/info/zinc_coatings_how_they_work>.
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given reaction may belong to more than one category. For example‚ in the present reaction‚ copper ions will be transformed into copper metal using zinc metal. This reaction can be classified as a single displacement reaction‚ but it is also a redox reaction since the copper is gaining electrons from the zinc atoms to produce the copper atoms and zinc ions in
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HKDSE CHEMISTRY – A Modern View (Chemistry) Coursebook 3 Suggested answers |Chapter 25 Simple molecular substances with non-octet |Page Number | |structures and shapes of simple molecules | | |Class Practice |1 | |Chapter Exercise
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This happened because of the carbon dioxide | Weight before 120.3 g | Part C | Zinc with Hydrochloric acidIt bubbled up like it was boiling and produced hydrogen gas. | Zinc weight- 1.5 | Part D | It took a little while of just clear then turned into a Carolina blue precipitate | | Part E | Zinc turned fire red (The copper was already red)Liquid turned a tar heel blueWarm on the bottom | | Part F | H2O2 Hydrogen proxide KI |
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investigation‚ hydrochloric acid solution is used which is toxic by all routes of exposure and is also a lung irritant. To avoid harm and ensure safety‚ eye protection and skin protection must be used. Equipment: * Metal tongs * Bunsen Burner * Zinc * Lead * Magnesium * Iron * Tin * Aluminium * Copper * Splint * 50 Ml Hydrochloric acid solution * 8 Test tubes * Measuring Cylinder * Beaker Method: Part A: Reaction of Metals with Oxygen 1. Hold each
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Making our journey to the 21st-century a question has arisen in the minds of the United States government leaders: should America continue or discontinued the penny? Well‚ why continue a coin of such little value and significance? The penny should be eliminated because the uneconomical coin is a waste of time‚ resources‚ and money. Too much time is spent in vain searching for lost pennies. According to MIT graduate Jeff Gore‚ mentioned in the article Penny Pinchers by Rick Khan‚ four hours are spent
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Financial Appraisal Group 08 WAQAS AHMED 117 IJAZ SHIGRI 25 SABIHA RIZWAN 83 SHAISTA ASAD 90 HINA ZEHRA 22 Project: Mineral Water Plant GENERAL BREIFING WORLD’S PRESPECTIVE: Traditionally‚ Mineral water was water from a mineral spring containing various minerals such as salts and sulfur compounds. After emerging the theme of safe drinking water and expanding trend of tourism and portability‚ Mineral water started to be bottled and gradually made a
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