Preparation of 4-bromoaniline Introduction Aromatic compounds tend to undergo electrophilic aromatic substitutions rather than addition reactions. Substitution of a new group for a hydrogen atom takes place via a resonance-stabilized carbocation. As the benzene ring is quite electron-rich‚ it almost always behaves as a nucleophile in a reaction which means the substitution on benzene occurs by the addition of an electrophile. Substituted benzenes tend to react at predictable positions. Alkyl groups
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Educational Preparation Grand Canyon University Professional Dynamics NRS-430V-0102 Educational Preparation Life is the largest ongoing educational facility in the world‚ and attendance is mandatory for all living breathing individuals. Nothing prepares an individual for life or its many lessons‚ as the old saying goes‚ “You live and you learn.” While we are all students daily in life’s university‚ we have many areas of individuality to grow‚ achieve‚ and seek knowledge. One aspect of individuality
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Buffer Preparation (Gozani Lab) 1. 1 M Tris-HCl Buffers pH Volume (L) TrisBase (g) HCl (ml) pH 7.0 2 242.2 150-155 pH 7.5 2 242.2 120-125 pH 8.0 2 242.2 80-85 Autoclavable. 2. EDTA 0.5 M (pH8.0) 0.5M‚ 1L: 148 g EDTA + ~30-40 g NaOH to adjust pH (or 186 g EDTA-Na.2H2O + ~20 g NaOH) Note: pH adjusted by NaOH is essential for solubility. Autoclavable. 3. TAE DNA Electrophoresis Buffer (50 X) (2 M Tris‚ 50 mM EDTA) 2L 484 g Tris 114.2 ml glacial acetic acid 200 ml 0.5 M EDTA 8.0 To make
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Educational Preparation – The Differences in Competencies of Registered Nurses with and Without Baccalaureate Degrees Educational Preparation – The Differences in Competencies of Registered Nurses with and Without Baccalaureate Degrees Nursing is a profession with great honor and satisfaction. Patients trust nurses in the most difficult times of their lives. Nursing avails itself many opportunities to grow and practice at several different levels. Not only is there the Licensed Practical Nurse
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Does Aspirin Effect Plant Growth Plant Science The question of this science fair project question is “Does Aspirin Effect Plant Growth.” This is a good question because aspirin help human get better but‚ will it help plant grow bigger. Or maybe it makes the plant grow faster? Or maybe it can make the plant not grow at all. In this science experiment I am using dieffenbachia plants. Dieffenbachia plants are usually house plants. This is great because this science experiment is being done in the
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Educational Preparation juli mar Grand Canyon University NRS 430 12-18-11 Educational Preparation There are 2 common‚ but different‚ pathways to receiving a RN license. You can earn a bachelor’s degree (BSN) or an associate degree‚ (ADN). While there are similarities between the two programs‚ a BSN takes two additional years of college at a university. Both programs teach nursing skills‚ electives ‚science courses‚ and clinicals. But‚ the BSN program is a more in-depth study of nursing
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Titration- Analysis of Aspirin Tablets Objective: Determine the percentage of aspirin (acetylsalicylic acid) present in two different commercial tablets by titrating the solution with a base. Also determine whether the aspirin is a strong or weak acid according to the Bronsted- Lowry and Lewis theories and deduce the formula of the acid- base reaction. Independent Variable: The amount of base (NaOH) in moles that are needed to neutralize the solution. Dependent Variable: Percentage of aspirin (acetylsalicylic
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What is death and what makes death such a mysterious subject? Death is defined as the permanent cessation of vital functions; the end of life. This is very scary when you think about it. This course has helped me understand the subjects surrounding death‚ and the process leading up to my death. “Death‚ dying and bereavement are fundamental and pervasive aspects of the human experience. Individuals and societies achieve fullness of living by understanding and appreciating these realities”. (Despelder
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Abstract: The goal of this experiment was to synthesize aspirin. In this experiment aspirin‚ also known as acetylsalicylic acid‚ was synthesized from salicylic acid and acetic anhydride. In the reaction the hydroxyl group on the benzene ring in salicylic acid reacted with acetic anhydride to form an ester functional group. This method of forming acetylsalicylic acid is an esterification reaction. Since this esterification reaction is not spontaneous‚ sulfuric acid was used as a catalyst to initiate
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Synthesis of Aspirin (Acetylsalicylic Acid) Abstract: This experiment is about the synthesis of aspirin under laboratory conditions. Aspirin is prepared by reacting salicylic acid and acetic anhydride; in the presence of sulfuric acid. After fully dissolving the salicylic acid with acetic anhydride‚ the solution is cooled and cold water is then added. Once the crystals form they are then filtered and left to dry out. There mass is measured and recorded then the yield is calculated. Introduction:
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