EXERCISE 11 SYNTHESIS OF ASPIRIN MARAVILLA‚ Ana Mikaela B Group 4 CHEM 40.1 1L Date performed: September 30‚ 2013 Date submitted: October 7‚ 2013 VI. RESULTS AND DISCUSSION Aspirin is prepared by the esterification of salicylic acid with acetic anhydride under acidic conditions. The phenol group in salicylic acid is replaced by a carboxyl group through electrophilic substitution. The mechanism for the reaction can be summarized
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SYNTHESIS AND CHARACTERIZATION OF POLYANILINE/POLY (P-HYDROXYANILINE)/Fe3O4 MAGNETIC NANOCOMPOSITE M. R. SABOKTAKIN‚ A. M. MAHARRAMOV‚ M. A. RAMAZANOV Baku State University‚ Baku‚ Azarbaijan E-mail: mamed_r50@mail.ru Several composites have been studied for static dissipationand microwave absorbing materials based on polyaniline with metallic oxides. These composites which are conducting polymers have been widely used because of their lower density as well their good environmental stability as in
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Jennie K. Daniels Organic Chemistry 2121 11 February 2014 Synthesis of Aspirin Salicylic acid derivatives‚ or salicin‚ are found in the bark of the willow tree. In the 5th century B.C.‚ Hippocrates ground the bark into a powder‚ and later‚ the Natives Americans chewed on the bark to alleviate fever and pain1. In the 19th century‚ a German chemist by the name of Felix Hoffman wanted to find a medication that would ease
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Black Americans‚ segregation‚ and slavery. Most of the people who have studied American history recognize the inhumane actions towards people of color during the 1960’s and 1980’s. Yet‚ people often are not aware of the similar acts perpetrated on the Native Americans during the same period of time. The Native Americans had to suffer their past of external shame imposed on their culture and tradition by the White American society‚ followed by a coercion of White American culture due to the government
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With college comes stress; questions about: money‚ majors‚ and careers are all students have on their minds. In such an ever changing world people have begun to question whether the educational institution of college is worth the hassle like it use to be. Before‚ college was thought of as a must to make a living‚ with college cost rising‚ now people are considering more classic hands-on jobs to be more fruitful (Source F). Once there was a time when our economy was almost entirely based on artisans
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For over the past several years each student is given 3 containers‚ each with 1 larva‚ which they had to care for. After the larvae had formed their chrysalises each student put 1 of their containers into a cold climate approximately 45°F‚ 1 in a warm climate approximately 85°F and 1 stayed out at room temperature approximately 72°F. The larvae spent a total of 5 days in each climate‚ and then they were removed and brought back to room temperature. Then the waiting game started to see how long it
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Teens are spending over one-third of their day using online videos and music. When adolescents spend that much of their time listening to music‚ it is bound to have an effect on them. Certain music lyrics have a negative influence in a teenager’s life. Music can affect teenagers ever-changing emotions‚ cause dangerous thoughts especially to those who are already alienated‚ and cause women to become de-sensitized to being treated poorly. Music can easily affect teenagers’ delicate emotions in a troublesome
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Over 200 years ago‚ our founding fathers envisioned a free America. They were able to find opportunity to bring their ideas to reality and create a foundation for a nation ideal for all. This dream is one of the many that has molded America into the reputable county it is today. Without the courage and boldness these men had to speak their minds‚ nobody would have the current opportunities accessible to them. Although many have developed the idea that the “American Dream” is not effective‚ it still
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One of the most prominent social constructs that has been in place since the Mayan civilization is that of time‚ which has gone on to become one of the most integral parts of human life. Ever since the creation of a standard time system‚ people have been searching for ways to save time in the hustle and bustle of their everyday lives in order to get the most time that they can out of one day. One such method that has been implemented around much of the world is that of Daylight Savings Time‚ or DST
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After going through all the sources and reviewing a lot of information on the food stamp system the main stasis that keeps coming up while reading through these articles is the stasis of evaluation. This stasis is one of the most predominate stases that come through from these sources. Most of the sources keep coming back to the stasis of evaluation because when you take a look at the food stamp system it ends up being evaluated over and over again. Seeing whether the whole food stamps system is
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