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  • Br 2 Hbr Solution
    513 words
    Relative Reactivity of AnilinesAbstract: Various Aniline were tested with Br 2/HBr solution, the products were crystallized and melting points attained to verify relative reactivity. My assignment, 2, 4-Dibromoanisol, was prepared in a yield of 52% with a melting point of 55-58 C. Reaction: Mechanism: Procedure: Anisole (0.35 mL, 0.0378 mol) was obtained and placed in a pre-weighed 25 mL round bottom flask, along with 2.5 mL of glacial acetic acid and a magnetic stir bar. Then the reaction appar...
  • Item 8 Of The Delayed Service Report
    1,498 words
    A completion report is one of three reports. The situation is based on conditions that exist at the time a TSO directs as to when a circuit, trunk, or link is expected to be available. The 3 types of reports are In-Effect Report, Exception Report, and Delayed Service Report. In-Effect Report (IER) - The facility or activity designated in the TSO (normally the CCO or CMO) will, within 72 duty hours (based on 24-hour workday not including weekends and holidays) of completion of action on the TSO, ...
  • 20 Min O Level 3
    874 words
    Short Answer 1) An exercise plan has three exercises, what are they and what are their purposes? o Stretching, CVE, Muscular Fitness Stretching improves flexibility, CVE improves the body's ability to endure exercise for longer, Muscular Fitness builds strength 2) What three ingredients we eat too mush of? o Salt, Sugar, and Fat (saturated fat in particular) 3) What 6 questions we should use to evaluate a potential diet? o What principle is involve do Is the diet safe Is the diet easy to stick t...
  • Present Indefinite Active 2
    1,480 words
    ... 5 99137030: . 9-91: H 1999 No 1. -s. 1. The Novopolotsk chemical works produces polyethylene and nitro n... reduces - 3- to produce Present Indefinite. 2. A well-known scientist works at this. plant. works - 3- to work Present Indefinite. 3. The workes' hostel is within 20 minutes' walk 20- - from the plant... workes' - a worker; minutes' - a minute., . 1 Novopolotsk is a young people town. -. 2. We have a large State library in our city... 3. The scientists developed new synthetic rubber --...
  • Effect Of Ph On Enzyme Activity
    1,291 words
    The Activity of Enzyme Catalase I. Introduction: What is an enzyme? It is! SSa protein serving as a catalyst, a chemical agent that changes the rate of the reaction without being consumed by the reaction!" (Campbell: Reece, 2002). Each enzyme acts upon a chemical substance called substrate, which fits into the active site (the portion of the enzyme that attaches itself to the substrate) like a lock and key, and is converted into the products during the reaction. Meanwhile the enzyme is released ...

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