Extraction (Ch # 07) Faraz Gohar Mr. Wayne Xie Chem 201 10/02/2012 Objectives : 1)To purify samples of organic compounds that are solids at room temperature. 2)To dissociate the impure sample in the minimum amount of an appropriate hot solvent Chemical Index : Naphthalene; mp 82 *C 1‚4-Dichlorobenzene; mp 56 *C 4-Chloroaniline; mp 68 - 71 *C; pKb 4.15 Ethyl 4-Aminobenzoate; mp 90 *C; pKb 4.92 Procedure :
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Kimberly Keller R. Anderson English 201 24 March 2014 When Your Teacher Believes in You Imagine being a student whose biggest concern was trying to get through the day alive. Surrounded by drugs‚ gangs‚ guns and violence‚ you can see why the rhythm of poetry isn’t the concern of students. This was the life of the students at Woodrow Wilson High School in Long Beach‚ California. Many of these students had a choice between attending school or boot camp; few aspired beyond basic survival.
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Origin of Life 1. The four stages of hypothesis for the origin of life on Earth by chemical evolution is * Abiotic synthesis of small organic molecules * The joining of small molecules into macromolecules * Packaging of these molecules into protobionts * The origin of self replicating molecules that made inheritance possible. 2. A.I. Oparin‚ and J.B.S. Haldane hypothesized a reducing environment. Stanley Miller and Harold Urey did lab experiments that showed that the abiotic
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The day of the surgery finally arrived. My husband and I were back in North Carolina after a two month stay with my daughter‚ but all our thoughts were centered in that New York hospital. Our optimism was perforated as fear started to creep in. The waiting had to be the worst of it‚ we thought. After thirteen hours in the operating room‚ the surgery was a success. There were smiles and collective sighs of relief‚ both here and there. Our little girl was going to be all right. The reprieve lasted
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The 9/11 incident is an event involving four plane crashes in a single day and the targets were the World Trade Center in New York and the Pentagon. It was a very tragic event and it affected the thoughts of people‚ especially who were close relatives and acquaintances that were killed in the incident. It immediately changed the history of the United States. Since the first plane crash on the World Trade Center (WTC)‚ it was already known that America was under attack. This was believed to be the
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have to pay compensations Criminal – state to be found guilty‚ each crime must be beyond a reasonable doubt 4. Substantive and Procedural Substantive Determines rights and responsibilities Procedural The rules that are put in place to determine the substantive issues V. Sources of Law UCC (Uniform Commercial Code) Deals with contracts for the sale of goods Almost identically passed in each state 1. Constitution Federal – grant of power State – often limits government power Three
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Thirteenth Amendment to the United States Constitution outlaws slavery and involuntary servitude‚ except as punishment for a crime. It was passed by the Senate on April 8‚ 1864‚ by the House on January 31‚ 1865‚ and adopted on December 6‚ 1865. On December 18‚ Secretary of State William H. Seward proclaimed it to have been adopted. It was the first of the three Reconstruction Amendments adopted after the American Civil War. Fourteenth Amendment * adopted on July 9‚ 1868‚ as one of the Reconstruction
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Economic disaster; this could be the adequate phrase to describe the way 9/11 affected the U.S economy. The terrorist attacks on September 11 were a series of two unexpected attacks to the World Trade Center of New York. At two different times‚ two different airplanes crashed into both of the twin tower buildings. These two attacks created a variety of impacts‚ which include heavy economic ones. This research paper will demonstrate that September 11 to a great extent‚ affected the economy in terms
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How 9/11 Changed the United States Americans have faced many changes since the terrorist attacks on September 11‚ 2001. The images we witnessed on the news over and over again still haunt us today. The families that received phone calls from loved ones who were going to die are still recovering. Our attitudes and concerns about safety are not as lax as they once were. Lives were lost‚ the economy took a nose dive‚ and the way we live has changed forever. The direct cost of the September 11th attacks
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The Carolina Panthers are off to the best start in franchise history at 6-0‚ a season that has seen this team battle through adversity and doubters. The Panthers are doing it old school with a smash mouth brand of football wearing down opponents and are just a pain to face. The running game has been phenomenal through the first six games and allowed us to play this brand of football. We lead the league in rushing yards with 144.7 yards per game and attempts at just over 33 per game it’s just great
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