No one knows what lies inside Azora’s mind‚ she had seen the unimaginable the unthinkable and now holds the key to the city. The sun shimmers over the emerald grass and crystal ocean that awake the birds to a soothing melody as they welcome Azora to the first day of summer. Azora lives in the “Magic City” of Miami‚ the lights and diversity of the city has always fascinated her “why spend my life attached to technology? When every day allows an opportunity to unlock the beauties of my city” she says
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Solids Recrystallization ABSTRACT In this experiment‚ impure adipic acid is purified though recrystallization. The impure adipic acid is dissolved in a solvent. After cooling it is ran through a vacuum filter to separate any moisture. The dry crystals are then weight for percent yield and the melting point range is taken to test the purity. There were two different trials ran in this experiment. The difference between the two was the addition of charcoal in the initial step to remove color impurities
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reaction rates at different concentrations and temperatures to determine the true rate constant‚ activation energy‚ reaction orders‚ and half-life of a reaction. The reaction of interest is the addition of a hydroxyl group to the nucleus of Crystal Violet. Crystal Violet‚ or hexamethylparaosaniline chloride for short‚ is a strongly colored purple dye with the chemical formula C25H30N3Cl and disassociates completely in solution. The relevant structure for this compound can be seen in figure 1
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the mixture (crude benzoic acid) from experiment 1 can be separated. By looking into more details‚ the solution should be cooled down slowly after dissolvable solid mixture dissolved in solvent to ensure the purity of desired product. According to crystal lattice theory‚ when solid forms‚ it blocks impurities to form solid; thus recrystallization is possible. Solubility is crucial in this experiment. There are three stages of solubility. Collision is when solid just added in solvent and nothing
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Aim: To determine the water of crystallization in washing soda crystals (Na2CO3.xH2O) Research Question: What is the percentage composition and the amount (in moles) of water in the given ionic hydrate? (Na2CO3.xH2O) Background Information: Sodium Carbonate also known as Washing Soda (Na2CO3.xH2O) is a sodium salt of carbonic acid. Sodium carbonate is domestically well known for its everyday use as a water softener. It is also used to remove grease‚ oil and wine stains. It can be extracted from
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with definitions and detailed graphs‚ we are hopeful this information is both useful and informative. Filter Types Monolithic Crystal Filters 2 Quartz resonator internally coupled utilizing piezoelectric effect. Discrete Crystal Filter Single quartz resonator with external components utilizing the piezoelectric effect. Notch filters Crystal or Discrete component filter that passes all frequencies except those in a stop band centered on a center frequency. High Pass Filters
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carbonate ion as it is more electronegative. The resulting copper (II) sulphate solution when cooled can easily crystalize which is in the solid form and the amount of product can be accurately measured by using electronic balance to get the mass of the crystal formed. The experiment is carried out to calculate the percentage yield of the salt formed. The percentage yield is the percentage of purity of the product that we want and the actual yield is always less than the theoretical value as there
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that are two or three layers thick. C. What is the purpose of crystal violet in the Gram’s stain procedure? The crystal violet increases the contrast of both gram-negative and gram-positive bacteria making them appear purple. D. What is the purpose of iodine in the Gram’s stain procedure? (What is a mordant?) The iodine helps set the stain by forming an insoluble crystal violet-iodine complex. Basically helps retain the crystal violet to the cell. E. What is the purpose of acetone-alcohol
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safranin purple‚ crystal violet red‚ safranin red‚ crystal violet 4. What is the function of the mordant iodine in a Gram staining procedure? A mordant causes the crystal violet to run. A mordant fixes the bacteria to the slide. A mordant keeps dye attached to an object. All of the above 5. What is the order of reagents used in the Gram stain? crystal violet‚ iodine‚ safranin‚ alcohol alcohol‚ crystal violet‚ iodine‚ safranin iodine‚ crystal violet‚ safranin‚ alcohol crystal violet‚ iodine
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In this experiment‚ 5.281g of trans isomers of [Co(en)2Cl2]Cl was synthesized from 12.249g of CoCl2▪6H2O. First‚ CoCl2▪6H2O was reacted with ethlenediamine (NH2CH2CH2NH2) that formed [Co(en)2(H2O)2]Cl. Then the [Co(en)2(H2O)2]Cl was reacted with H2O2 to change the cobalt’s charge to cobalt(III) from cobalt(II). Finally HCl was added into the solution to form [Co(en)2Cl2]Cl. The percent yield was 45.51%.To synthesis trans isomers of [Co(en)2Cl2]Cl‚ distilled water was first mixed with CoCl2▪6H2O‚
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