However‚ the original manufacturer‚ Kaufmann Ltd.‚ has gone out of business‚ and specifications for the part are unavailable. The purpose of this experiment‚ performed by Ryan Nelson‚ Peter Glascor‚ Eric Flowr was to determine the identity of the unknown polymer by comparing its properties to properties of other known polymers. Most likely‚ the part is one of the five following polymers: polyethylene‚ polypropylene‚ polystyrene‚ polycarbonate‚ poly(vinyl chloride). These are all extremely common
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Purpose: To identify an unknown bacterial specimen using basic laboratory technique and biochemical tests. The unknown bacteria will be one of the following: Enterococcus faecalis‚ Staphylococcus saprophyticus‚ Escherichia coli‚ Enterobacter aerogenes‚ Proteus vulgaris‚ Salmonella [I assume typhimurium]‚ or Shigella [either flexneri or sonnei‚ we used both in our lab during the semester]. Procedure {and observations}: Observe bacterial colony morphology. {Colonies are large‚ beige or
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strongest soldiers.” Once you see the Tomb of Unknown Soldier‚ you will remember it forever. The citizens of the United States might not know who the unknown soldiers are‚ but God always will. This Tomb sits in Arlington‚ Virginia‚ but can be seen from Washington‚ D.C. While at the Tomb of Unknown Solider you must show utmost respect. The Tomb will take your breath away; leave you humble and grateful for the sacrifices of those who have served. The Tomb of Unknown Soldier is honoring the ones who lost
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Chemistry Essay On Metals Iraj Malik 12/10/2012 MYP-5 The International School A metal is defined as a chemical element that is malleable and ductile‚ usually solid‚ has a characteristic luster‚ and is a good conductor of heat and electricity‚ e.g. copper or iron. Metals form oxides that are basic‚ they are good reducing agents and metals have lower electro negatives.There are many properties of metals. The chemical properties are that they can combine together with other metals to form am alloy
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I. BACKGROUND CMI has developed a new technology using curled metal to create pile driving pads. Compared to existing products on the market‚ these pad offer several benefits: • Faster pile driving saves contractors rental fees‚ labor expense ‚ and spreads overhead over more feet driven in a given period of time • Longer life of pads save contractors additional cost in reducing changeover time • Heat resistance further reduces changeover time‚ saving additional expenses • Safety – CMI pads
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This media contains salts that most organisms can’t tolerate due to their osmolity ranges. Microbes that normally exist under these conditions are able to grow. MSA is usually used for Staphylococcal species. Differential media provides chemical compounds that bacteria metabolize differently. The difference is observed by a colony or media color change. This media is often used to differentiate between groups of organisms with the same morphology and biochemical resemblances. Eosin Methylene Blue
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The purpose of the unknown bacteria lab assignment was to select an unknown bacteria culture and‚ through a series of metabolic tests‚ identify which bacteria genus resided in the pure culture received. A nutrient broth inoculated with bacterial culture (numbered 45‚ henceforth referenced as U45) was selected and a streak plate was made to isolate a pure culture for use throughout the assignment. From the streak plate‚ several slides were made to determine the morphology of unknown 45. A Gram stain
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Metal detectors in schools pose more of a threat than a sense of security. Every student carries metal of some form on them. Pens‚ pencils‚ notebooks and other school supplies all contain metals. If we try to make schools “safer” by placing metal detectors in the entrance and exit of every school building. With many school shootings and stabbings‚ media and parents have proposed new safety measures. Placing metal detectors and spending extra time on safety management takes time away from class and
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-1Determination of an Unknown Liquid (2-butanol) Through Fundamental Analysis Lee Billips Department of Chemistry‚ Shippensburg University‚ 1871 Old Main Drive. Shippensburg‚ PA‚ 17257. Abstract: The identification and characterization of unknowns are an important part of organic chemistry. It is fundamental to know experimental methods to deductively identify compounds (1) . The determination of unknown #6 (2-butanol) was identified by a series of test; first taking the boiling point (94-96
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renovation‚ most people don;t think about it much before it is time to get a new roof. However‚ there are many great alternatives to asphalt shingles‚ and metal roofing is an option that stands out. Of course‚ when imagining a metal roof‚ the first thing that comes to the many people’s minds is a warehouse or other commercial structure. Metal roofing has come a long way and is so much more fashionable that its reputation‚ and is even being used on high-end mansions.
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