anhydrous ethanol was added in two portions through the top of the condenser. The mixture was heated under reflux for an additional 15 minutes after the foaming subsided. The mixture was then allowed to cool to room temperature and then put into an ice water bath. Afterwards‚ the crystals were collected via suction filtration and rinsed with three 5-mL portions of cold 95% ethanol to yield 2‚3‚4‚5-tetraphenylcyclopentadienone in an 81.2% yield as a dark purple crystalline solid: mp 218-220°C‚ (lit3
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Year 12 English Standard Assessment Task Part A: Reading & Writing – Analysis Written by Izak Lucas-Parr Text 1: Edward Scissorhands (Film) Directed by Tim Burton Edward Scissorhands (1990) tells us a story about an artificial man‚ Edward ‘Scissorhands’‚ who was made by a lonely inventor in his mansion atop a hill near a small town. Long after his inventor’s death‚ Edward is brought into society by Meg‚ a local resident and encounters many new and interesting things as he attempts to belong in
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windy “ski lodge picture” type of day in the snow Pretty sight of snow on the landscape‚ of snow gently falling Cold‚ icy‚ snowy Slushy; sleet rain freezing rain night; getting stuck in the snow‚ car crashes; old people breaking hips slipping on ice; cold‚ wet‚ windy ; having to shovel all of that *&^R snow off the walk and driveway BUT>>>getting to be outside shoveling snow on a nice day‚ meeting neighbors also doing same‚ maybe doing someone elses driveway because you have a snow blower‚ or
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interconnected‚ the impact of changing one aspect of one system redounds through all of the systems in the planet (Impacts of Climate Change‚ n.d.). For instance‚ the impact of climate change on the water cycle is seen in the melting of glaciers and ice caps‚ it is seen in the evaporation of rivers and lakes‚ etc. Additionally‚ if we look at ecosystems‚ the changes in temperatures and precipitation affect life on the planet in various ways. The interconnection of the
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Beauty in the Beast Flowing peacefully between the foothills of West Virginia and the Ohio valley‚ lies one of nature’s most beautiful wonders. The Ohio river is a place many visitors find as refreshing as a cool glass of lemonade on a hot day. In the spring and summer months‚ a visitor may hear the laughter of friends enjoying a relaxing weekend. The quick speed of boats cause the water to smack against itself making waves that ripple out and splash against the river bank. They may smell a mixture
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Thematic Unit of Study EED-510 Grand Canyon University Introduction Observing tenured teachers is always a great resource. It is important to look at great lessons that are being created. It is always so helpful to see how they structure their lessons and how they choose to illustrate the content they are teaching. It was a privilege to observe such a wonderful teacher with so much experience. The Lesson The science lesson was on the water cycle. This was a great lesson to observe. The
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The slope was 4.47 during the first hour of holding at 9°C‚ whereas it was 6.50 and 6.84 at 16°C and 21°C‚ respectively (Figure 2-4). The high rate of temperature change was maintained for a longer period of time at higher ambient temperatures‚ due to a larger temperature gradient between the fillets and the environment (Kondjoyan‚ 2006). During the second hour of holding‚ the slope was 5.32 at 16 °C and 5.25 at 21 °C‚ however only 0.86 at 9 °C. During the third and last hour of holding‚ the temperature
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1. Introduction The purpose of my project is to demonstrate how water temperature affects the dissolving of sugar in liquid. Everything in our universe is made up of particles which are in constant motion. In a solid state particles move the slowest while in a liquid state particles move the fastest. Under the right conditions‚ solid particles (the solute) when mixed in liquid (the solvent) can form a solution. This occurrence is called dissolving. I wanted to answer the question; does the temperature
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Ice man Have you ever been treated unfairly? Have you ever been treated like you have no rights at all? Most people have‚ but few of them have been treated as badly as Victor and his friends were in “Ice Man” written by Elmore Leonard‚ just because they are Native Americans. “Ice Man” is fiction. In “Ice Man” the narrator is an unknown 3rd person narrator. He does not enter the characters minds‚ he only tells us what they say and what they do. And therefore he must be a person that does not take
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Fire and ice The world could possibly end in two ways. The author‚ if he had to perish twice would like to try both. Fire is desire and I think ice is equated to hate. I don’t think he necessarily thinks one has a greater destructive power than the other‚ but that his first choice would be fire/desire. This is because I think that the fire represents love. Both fire/desire and ice/hate can be extremes of emotions and the elements. Do you find it interesting that his last name is Frost?
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