Safety Precautions for Synthesis of Acetic Anhydride Acetic Anhydride Acetic anhydride is an irritant and also flammable‚ therefore gloves and goggles should be worn at all times during the experiment. It is reactive to water‚ so in the case of fire‚ alcohol foam or carbon dioxide is preferred to use as an extinguisher. This chemical has harmful fumes and use of a fume hood is strongly recommended. Sulphuric and Salicylic Acid These acids may irritate the skin in high concentrations. Take
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industrial settings due to the simplified synthesis and safety parameters of the overall reaction. Both benzoic acid and methanol are relatively cheap to obtain from a commercial source as well as being easy to store with a relatively long shelf life. The Fischer esterification method is a fundamental and important synthesis process in training our future chemists in both commercial and academic employment and principles. By utilizing this method of synthesis‚ the chemist has the knowledge to utilize
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Argumentative essay - Separate-Gender Classes in Co-Ed School is the best solution to the situation · Defend solution Nowadays‚ many parents are worrying about the amount of distractions that exist in co-ed schools‚ which directly affect their children’s academic performance. I propose: Assigning students in Single-Sex School Allocating all girls in one classroom and all boys in another‚ while they are in the same school. Defend on 2nd solution. And here is my argument. Nowadays
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Microwave Synthesis of 5‚10‚15‚20- Tetraphenylporphyrin Abstract: In this green chemistry experiment of 5‚10‚15‚20-tetraphenylporphyrin was synthesized from benzaldehyde and pyrrole. using microwave irradiation to heat the reactants.‚ The liquid reactants are absorbed on a solid support‚ silica gel‚ which acts as a Lewis acid catalyst to facilitate the reaction. The reaction forms a porphyrinogen‚ which is then oxidized to the porphyrin product by atmospheric oxygen. Column chromatography is performed
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solution‚ CaCl2(s)‚ xylene‚ t-butyl peroxybenzoate‚ methanol‚ 5% aqueous solution of 1‚ 6-hexanediamine‚ NaOH(s)‚ 5% sebacoyl chloride in hexane‚ glacial acetic acid‚ concentrated H2SO4‚ cotton balls‚ acetic anhydride‚ CH2Cl2 Procedure: For the synthesis of polystyrene‚ 10 ml styrene and 20 ml of 1 M NaOH solution was placed in separatory funnel and they were shaked for several times. Aqueous layer was discarded. The styrene layer was washed with water and dried with CaCl2(s). The styrene was placed
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.Christopher North Prof. Ed Stever ENG 101 March 24‚ 2015 Argumentative Essay Capital Punishment The majority of Americans support capital punishment‚ and there are some who don’t. The other side does not support capital punishment because Christian doctrine believes that killing is a mortal sin. There are some government officials who do support the death penalty and are there some who do not support the death penalty. Therefore‚ capital punishment should be utilized in all 50 states
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Sirisakul Ratanachomsakul Argumentative Essay Girls love dolls and boys love trucks is what we have been taught by our grandparents‚ parents‚ and teachers generation by generation and has become gender stereotypes. Women are expect to marry and have children. She also put her family’s welfare before her own; be loving‚ compassionate‚ caring‚ nurturing‚ and sympathetic. For that female is often seen as a symbol of a weaker gender comparing to male who are bigger‚ stronger‚ and financial provider
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Abortion One of the most constant battles our society faces is the issue of abortion. It is a controversial issue that continues to create tension and diversion among our culture. But what makes abortion such an emotional and personal conflict? Often time people aren’t fully aware of what takes place in the process of aborting a fetus. Let’s take a look at what abortion is and what makes it so controversial. By understanding what an abortion is and the different viewpoints of society‚ one will acquire
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The birth and growth of the media age has paved the way for numerous outlets for advertising. Millions of people reading magazines‚ watching TV‚ listening to the radio and surfing the web are constantly bombarded with ads for different products or services. Although the creation of media has given us great power and knowledge‚ we see its consequences in our personal lives and in society as a whole. Advertising has negatively affected society through its use of false claims and manipulation‚ influencing
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C. Reeves‚ M. O’Neal‚ D. Tran Mrs. D English II 3B 1st March 2012 Effects of Culture How much of your life has changed because of the culture you’ve been used to? Think about everything you ’ve ever done in your life. All your actions and emotions towards things–how naturally did they come? The cultural background of a person sways him or her to act in certain ways. Culture is the source of what one comes out to be‚ even after many years from what he or she first saw of a culture. A person’s
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