chromatography in chemistry is a method used to purify individual chemical compounds from mixtures of compounds’ (Wikipedia‚ 2011). This method is similar to thin layer chromatography‚ but the compounds in the mixture are collected separately. Green dye is used in this experiment that consists of blue and yellow constituents. Materials and Methods: As per SCI105 Chemistry laboratory manual 2012‚ Brooks‚ 2012‚ page 12-19. With the following changes: The mass of recrystallization mixture
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Exocytosis Lab Report Rough Draft Abstract: In Paramecium caudatum‚ trichocysts are 10^3 secretory vesicles that are released from the cytoplasm. We first observed how the presence of Alcian blue dye triggers normal secretion of trichocysts‚ and we then tested four different hypotheses in order to determine how the presence of Ca++ ions in the extracellular and intracellular environment affects the secretion of trichocysts. Our first our hypothesis tested whether extracellular calcium is
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What is American Federalism? According to Dye (2011)‚ "nations are not truly federal unless both national and subnational governments exercise separate and autonomous authority‚ both elect their own officials‚ and both tax their own citizens for the provision of public services" (p.263). American Federalism is just that. In the United States each state has their own government with elected officials‚ to go even further each town within these states also have their own elected officials. These officials
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liter sample is dispensed into well by holding the tip of the micropipette just inside the well so as not to puncture the bottom. 7. We continued inserting the remaining dye samples into each of the remaining wells‚ using the same amounts for each well. For example: Well #2 contains Dye sample #2 and Well #3 contains Dye sample#3 and so on. 8. After we loaded the E-Gel‚ we started the 35-minute electrophoresis run. This was confirmed by a steady green light. 9. The current automatically
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Ashley Spees CHM 261- Batzer Chem Final Write Up- Kool Aid Lab Total Acid This part of the lab requires titration of Kool Aid with an NaOH solution. The reason titrations are used is to determine the concentration of an unknown solution by reacting a strong acid with a strong base. Titrations are hard to accomplish‚ though‚ due to the fact that indicators used to show the endpoints are very sensitive and one drop could make the solution titrate past its endpoint. Blue stock solution: 3 mg/L
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OBJECTIVES: Given a set of activities‚ the students should be able to attain at least 75% proficiency and should be able to: A. describe staining; B. enumerate the common stains; C. differentiate between an acidic dye and a basic dye; D. compare simple‚ differential and special stains; and E. list the steps in preparing a Gram stain and describe the appearance of a gram-positive and gram- negative cells after each step.\ II. SUBJECT MATTER: Biological
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APPARATUS a) Dye reservoir. b) Stilling tank. c) Observation tube. d) Stopwatch e) Graduated cylinder THEORY Reynolds number is used to distinguish between laminar‚ transitional and turbulent flows. Re = Reynolds number V = Fluid velocity (m/s) d = Pipe diameter (0.012m) v = Kinematic viscosity (0.893 x 10-6m2/s) Laminar Flow‚ Re < 2000 Laminar flow denotes a steady condition where all stream lines follow parallel paths. Under this condition‚ the dye will remain
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Ever wanted your hair to be a crazy unnatural color? Dye it! Hairstyles aren’t permanent. Later if you decide you want your old hair back just make a trip to a salon they will fix you up with some cute normal hair. Anyone‚ no matter their age‚ can use the confidence boost that comes with having hair that deviates from the norm. Have some fun and express yourself! You can do almost the whole process at home for relatively cheap. Just be sure to check in with your employer first since I’d be willing
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Tie-Dye Grignard Synthesis Abstract: 4-Bromo-N‚N-dimethylaniline underwent a Grignard reaction with diethyl carbonate to produce a type of the tie-dye chemical triarylmethane. This specific triarylmethane produces a vivid crystal violet color when dyed. The experiment was first heated under reflux to produce the necessary Grignard reagent as a grey liquid. It was then reacted with diethyl carbonate and hydrochloric acid to produce crystal violet. The resulting chemical was very absorbent to
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laboratory to determine their absorbance and prepare a Beer’s law plot. Molarity of these samples was also calculated to determine concentration and percent error rate. Students also analyzed the concentration of blue dye #1 to determine the concentration of blue dye #1 in a commercial blue dye drink. Procedure: To drop solutions into the test tubes and then determine the Beer’s Law relationship of each and the calculations of each of part of the experiment. Convert %T to absorbance and prepare a Beer’s
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