Friday, January 31, 2020
Solid and Melting Point Essay Example for Free
Solid and Melting Point Essay (2pts) Indicate the correct waste container for the following compounds: a. hexane non-halogenated organic b. 10% NaOH aqueous c. methylene chloride (dichloromethane) halogenated organic d. magnesium sulfate solid e. sodium hypochlorite halogenated organic 2. (1pt) Describe the proper way to separate ground glass joints if they become stuck. The proper way to separate ground glass joints is to hold the two pieces of glassware with paper towels so that your hands are touching as close to the joint as possible and pull with a firm grip. Try to loosen with a slight twisting motion. If that does not work try to tap with a wooden handle and try to pull apart. Lastly you can heat the joint with hot water or steam bath, but to be careful not to over heat. 3. (1pt) What is a solute? What is a solvent? A solute is the solid that is dissolved in a liquid. The solvent is the liquid in which something is dissolved. 4. (1pt) What is the purpose of a water trap (used during vacuum filtration)? The purpose of a water trap is to prevent filtrate from being sucked into the vacuum system. 5. (2pts) What is the difference between crystallization and precipitation of a product? List three differences. Crystallization forms crystalline solids while precipitation produces amorphous solids. Crystallization is slow and a pure compound comes out of solution and precipitation is fast and a mixture of compounds falls out of solution. Crystals have an ordered structure than amorphous solids and are harder to produce. 6. (1pt) What will happen if you choose a solvent whose boiling point is higher than the melting point of the compound to be crystallized? The solvent would boil out before the compound could melt. 7. (1pt) How does the melting point of a product help determine its purity? The purer the material the higher its melting point and the narrower its melting point range is. The range should fall in to the melting point range of what the substance you are determining its purity for. 8. (1pt) Generally describe how to predict solubility. Like dissolves like. The solvent/solute molecules are structurally similar so the solute will dissolve in the solvent.
Wednesday, January 22, 2020
Inhumanity of Mankind in Othello Essay -- essays research papers
                                                                                                                                                                                                                  Inhumanity of Mankind The inhumanity of mankind is displayed all throughout Othello. In every act and scene it is the main underlying theme from the simplest of degrading comments from Brabantio to the complex schemes thought up by Iag...
Tuesday, January 14, 2020
Compare and contrast the poems Essay
The poem leaves us either reassured that in the midst of all evil there can be some good or depressed and in despair because in the family life of the Belson commandant lurks an evil which could ruin their lives any time. Night of the Scorpion The title denotes power and control from the scorpion as one night the scorpion ruled and controlled everything that happened. The title uses Night to give a sense of dark times and that something fatal may occur. The poem is very other. It has an Indian location which is where scorpions can be found as it is one of the warmer regions of the world. The poem is in free verse with the last three lines sectioned off. It is of narrative style and contains a very memorable heart. The weather was desperate and it was lashing with rain. In fact the monsoon conditions had affected the scorpion and all that it wanted to do was to shelter from the torrent. However it was disturbed by the poet’s mother who was probably searching for rice to feed her family. She was stung and the poison from the tail entered her bloodstream like a foreign invader defiling the enemy territory. Many neighbours arrived and the author compares this to a â€Å"swarm of flies†. I would compare it to students who clamour around desperate fro entertainment around a schoolyard fight or would be helpers around an accident victim. The neighbours like the helpers all had their suggestions many of their ideas involving the power, rituals and beliefs of religion. The scorpion is thought to be evil when in reality it is only trying to protect itself. The people believed that the victim and the scorpion were still linked. This bond meant that when the scorpion moved the poison inside the mother moved around her blood invading and conquering. Many prayers were said for the victim. The neighbours also felt that out of this tragic accident some good would emerge. The poison would â€Å"burn away†her sins and cleanse and purify her body of excessive ambition and lustful or adulterous thoughts or acts. Neighbours believed that her suffering was paying the price of evil to God and reducing the amount of evil in the world. The victim’s husband was willing to try any one idea or a combination and mixture of the suggestions. He was usually not one to believe in religion but usually based his opinions on logic and facts. Yet even he set fire to the affected site and watched the â€Å"flame feeding†on her toe. A holy man was allowed to perform sacred rites and after twenty hours the victim recovers only to rejoice in the fact that it was her and not her children. The mother’s wishes were a superb example of the unconditional love most mothers feel for their children. Comparisons and Differences. Both poems are about creatures who are simply concerned with their own survival. With the vultures it is the need for food that causes them to be scavenges and with the scorpion its wish not to be squashed causes it to â€Å"flash its diabolic tail†. Both poems give information on cultures that are not familiar to us. The main difference is the message given by the poets In vultures the readers can chose there own position with regards to good and evil whereas the second message denotes the helplessness that sometimes death will occur and at other times the victim will survive. In the scorpion it is possible for both the victim and the scorpion to survive whereas the vultures will die if they don’t eat prey and the prey is already dead. Death is a necessary evil for the vultures. Cultural Background I think that ‘Night of the Scorpion’ best captures cultural background because it mentions religion and family life from another culture. For example â€Å"mud baked walls†and â€Å"candles and lanterns†and the â€Å"Holy man performing his rights to tame the poison with an incantation†. Whereas ‘vultures’ is set in the middle of nowhere, somewhere like the deserted plains of Africa. It isn’t something that would be found happening in a village. ‘Scorpion’ is a true story of the poets’ family and it comes across through the detail and building of atmosphere the poem contains brought about by the phrase â€Å"ten hours of steady rain had driven him to crawl beneath a sack of rice†. As he was there at the time his thoughts and feelings are brought across very well in his writing. The poem shows compassion when the â€Å"mother only said Thank God the scorpion picked on me and spared my children. †Conclusion I prefer ‘vultures’ as I like the way in which evil is contained in good. This is shown in the phrase â€Å"in the very germ of that kindred love is lodged the perpetuity of evil†. The evil is described in phrases such as â€Å"picked the eyes of a swollen corpse†, â€Å"ate the things in its bowel†and â€Å"fumes of human roast†. The good however is conjured up by â€Å"inclined affectionately†and â€Å"tender offspring. I feel it is more of a poem compared to Night of the Scorpion because Scorpion is a very much narrative style of writing. It is too narrative for my liking.
Monday, January 6, 2020
The American Dream in The Adventures of Huckleberry Finn...
When people think of the American Dream, they think of individuals who climb up from the bottom of society to the top through hard work and determination. This way they could gain possession of the materialist things they always wanted and live a joyful life as well as provide for their families. One also thinks of a society free of prejudice and discrimination where everyone is considered to have an equal status. Yet, when Mark Twain wrote his book, The Adventures of Huckleberry Finn, he intended to reveal the darker side of humanity and how things actually occurred after the Civil War. nbsp;nbsp;nbsp;nbsp;nbsp;One of the aspects of the American Dream is the pursuit of wealth by means of hard work and determination. In his book,†¦show more content†¦For quite some time, Huck’s father disappeared from town only to arrive later when he heard that his son had acquired a small fortune. He then threatens to beat Huck â€Å"down a peg†so that he would remind him of his status in the family only hoping to get the fortune for his booze. Things only get worse when Pa learns that Huck has become the first member of the family to learn to read, and consequently takes him away from town down the river into a small cabin. Cleverly, Pa doesn’t want to abandon Huck just yet for he continuously threatens the Father about the fortune he has hidden until Huck finally fakes his own death. Pa would be a fine example of a specimen who was unworthy of his breath by the way he treated Huck. nbsp;nbsp;nbsp;nbsp;nbsp;According to the American Dream, everyone should be declared equal. At that time in society, the law just recently declared to follow that motive. In a dream, everyone has an equal status in society, be free from discrimination, and have the right to express themselves as individuals. In his book, Mark Twain decided to unveil the mask of what was truly happening in society. Even though slavery was outlawed, there was still the problem of who would enforce it. Evidently, no one cared for it in the South as blacks were still being treated just the same way they were before the Civil War. Jim’s status as a human continuously diminished even though he proved himself time and again that he wasShow MoreRelatedThe Grapes Of Wrath And Huckleberry Finn Analysis819 Words  | 4 PagesThe American Dream is a dream in which life is fuller, better, happier and free. In the two books Adventures of Huckleberry Finn by Mark Twain, and The Grapes of Wrath by John St einbeck,  each book shows the American Dream in a different way. In The Grapes of Wrath, the American Dream is shown as in illusion. That being because America is going through the Great Depression and it’s very difficult to make a living or even have food on a plate. 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