Unit 4B Task 2 Title Recrystallization of benzoic Acid Aim Equipment 1. Erlenmeyer flask 2. Graduated cylinder 3. Hot plate 4. Small beaker 5. Ice bath (if necessary) 6. Filter paper 7. Buchner funnel 8. Spatula 9. Weighing machine Method 1. Weighing paper was used to weigh approximately 1.00g of ‘impure Benzoic acid to produce re crystallization’. 2. Moved it to a 125ml Erlenmeyer flask. 3. Poured approximately 20ml of distilled water by using a graduated cylinder
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The reporting party (RP) met with former resident Crystal Espinoza while in her current placement with Helen Torres 6315 Tobago Ct.‚ Bakersfield CA 93313 (661) 716-1104 facility #909432827 FFA Legacy Behavioral Services. During the interview Crystal disclosed that at her prior placement with foster parents Dianna and Raymundo Morales she was treated inappropriately. The foster child stated that she and her foster sisters Tabitha Farris and Esperanza Bravo were called pendeja (stupid)‚ cabrona (bitch)
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underwent crystallization process using the preferred recrystallizing solvent‚ water. The crystallization process was when crude acetanilide was placed in hot water bath and was cooled after in an ice bath which would then yield to the formation of crystals of pure acetanilide. The percentage yield form the crude acetanilide was 94.59%. The percentage recovery of the experiment was 46.43%. INTRODUCTION Organic compounds that are synthesized in laboratories or isolated from natural recourses
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English 120‚ Section 06 24 March 2013 In the article “2b or not 2b”‚ David Crystal begins with discussing how others such as John Humphry argued that texters are “vandals who are doing to our language what Genghis Khan did to his neighbors 800 years ago. They are destroying it” (335). This is also the common belief of most people. People often argue about the bad points of technology over our language. However‚ Crystal believes that texting can improve children’s ability to read and write rather
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on the countryside by the farmer. The harvest of the beets starts in September‚ they will be lifted and loaded. Transport The sugar beets will be transported by truck to the factory. Production process Before the sugar beets will be real crystal sugar‚ the beets are inspected on the quality and control department. The beets are weighted and the sugar content will be determined. After that the beets will be washed and adhering soil will be removed. The beets will be sliced into thin strips
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method is either crystal violet or methylene blue‚ each almost equally effective. The microorganisms that retain the crystal violet and iodine mixture appear purplish brown under microscopic examination. These microorganisms that are stained by the Gram’s method are classified as Gram positive. Others that are not stained by crystal violet are referred to as Gram negative‚ and appear in shades of red. Gram staining is based on the ability of bacteria cell wall to retaining the crystal violet dye or
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Tackling the Reasons behind Crystal Sales Volume Decline Marketing Research Project Report 6/26/2011 Presented to: Dr. Nehal el Naggar Table of Contents Market Overview 3 Problem Definition 3 Management problem 3 Steps taken to identify the Market Research Problem 4 Secondary data analysis 4 Expert depth interviews 6 Market Research Problem Definition 8 Research Objectives 8 Theoretical Framework (Defining the Dependent & Independent Variables) 9 Research Design 9
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with slightly curved ends and forms a parasporal crystal during the stationary phase of its growth cycle . Occurring in pairs or short chains‚ Bt is also motile with peritrichous flagella and non-caspulated . Bt belongs to the family of bacteria‚ Bacillus cerus (B. cerus)‚ which produces toxins that cause gastroenteritis (food poisoning) in humans. However‚ Bt is different than B. cerus because it contains a plasmid that produces protein crystals that are toxic to insects instead of causing food
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and tools‚ and proceeded to begin separating each ingredient. I used a magnet to separate the iron from the mixture. Then I heated the mixture in water to get the non-soluble sand out. Then I filtered out the benzoic acid after cooling it into a crystal form. Lastly‚ I allowed the water to evaporate leaving behind only the salt. If any party was interested water does not evaporate fast enough for my liking. Data: SEPARATING IRON SUBSTANCE/ITEM MASS OBSERVATIONS WEIGHING DISH .6 G MIXTURE
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solvents. Fluorene(C13H10) is a polycyclic aromatic hydrocarbon. It forms white crystals that exhibit a characteristic‚ aromatic odor similar to that of naphthalene. It is combustible. It has a violet fluorescence‚ hence its name. For commercial purposes it is obtained from coal tar. Results: In part A‚ .30g of impure Sulfanilamide was placed in a beaker‚ and heated 95% ethyl alcohol was added to just cover the crystals. This was then heated and swirled vigorously until all is dissolved. Then remove
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