The determination of iron in an unknown solution by using 1, 10 reagent phenanthroline. Method Hydroxylamine hydrochloride solution (5 cm3, 10% w/v), acetate buffer (10 cm3, 0.10 mole dm! 3) and 1, 10-phenanthroline solution (5 cm3, 0.25% w/v). Was Pipette into the flask 20 cm3 of unknown iron solution Dilute the contents of the flask to the line with deionised water; a dropping pipette was used to add the last ml so to prevent overshooting. Then that solution was mark as A .Then the above procedure
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-The data was not processed and generated automatically between several modules Alternative solutions: i. Buy new software ii. Develop in-house accounting system iii. Outsourcing the system Problem: Documents are not properly pre numbered, recorded and documented -Sales invoice are manually produces and not pre-numbered -Monthly statement of account not periodically prepare Alternative solutions: i. Adopted auto pre numbered system ii. Implement manual pre numbered system Problem: Lean
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conclusion that since hydration shells surround all the table salt crystal ions when salt and water are mixed, this allows the water molecules to come close to each other, thus reducing the overall volume of the solution and the volume of a drop of water. The 2% concentration solution, which had the largest amount of sodium chloride in this experiment, had the largest decrease in the volume of a drop of water. Thus, the data I collected matched this information since there was a decrease in the
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sucrose in each solution Dependent Variable: Percent difference in mass of each egg after soaking in the sucrose solutions Experimental Question: If we change the amount of sucrose in each solution that the eggs will sit in, how will this affect the difference in the mass of the eggs? Hypothesis: If an egg is placed in a 4 M sucrose solution overnight, then that egg would lose a greater percentage of its mass than the eggs placed in any other solutions tested, because the solution it is in has a higher
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Q1 - Absorbance of Cyanocobalamin Vitamin B12 at wavelength 460 nm was 0.336 - Absorbance of Cyanocobalamin Vitamin B12 at wavelength 620 nm was 0.018 - The Concentration of Cyanocobalamin Vitamin B12 was 0.2 Molar Absorptivity In order to calculate the molar absorptivity I used the following equation : -Absorbance = 0.336 -L = 1 -Concentration = 0.2 ε = A / l x c so 0.336 / 1 x 0.2 = 0.0672 …. The molar absorptivity of the wavelength 460nm was 0.0672 - Likewise, the wavelength 620 has been
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Crystallization is the (natural or artificial) process of formation of solid crystals precipitating from a solution, melt or more rarely depositeddirectly from a gas. Crystallization is also a chemical solid–liquid separation technique, in which mass transfer of a solute from the liquid solution to a pure solid crystalline phase occurs. In chemical engineering crystallization occurs in a crystallizer. Crystallization is therefore an aspect ofprecipitation, obtained through a variation of the solubility
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cases”. These cases are designed to provide the students the opportunity to demonstrate their mastery of all marketing related topics and issues. Each student, individually, is required to prepare a 2 to 3 page single spaced typed solution to the case. The solution should be in the format of an executive memo and be very strategic action oriented. If there are questions at the end of the case, unless otherwise directed, questions should only be used as guidelines. Answering only those questions
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the temperature of water increases, the particles of solid Potassium chloride, KCl, which are absorbing energy from its surrounding, start moving more easily between the solution and its solid state because. According to the second law of thermodynamics, the particles will shift to the more disordered, more highly dispersed solution state. I predict that as the temperature of a KCl and water mixture increases, then the solubility of the KCl will also increase. Variables Dependant variable
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ambiguity, i.e. solutions are not clear cut. These cases were real-life situations encountered by corporations. Since solutions were not clear cut, corporations approached accounting firms for guidance. Deloitte, Touche & Tohmatsu used these issues to compile a series of cases to provide students the opportunities to have a “hands-on” experience in how accounting firms go about looking for a solution. To assist students in completing the assignment, sample cases with solutions were posted. Students
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to offer all kinds of treatments so patients' care would be continued without any disruption. PH’s patchwork IT infrastructure is in critical condition, so it has major IT infrastructure problems. CEO of PH Max Berndt is trying to find the right solution. He has an option to go with monolithic system that will provide consistency across PH’s facilities but may not give doctors enough flexibility or he can choose service-oriented architecture (SOA), a modular design that will allow PH to standardize
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