Obtained/g | Colour of Crystals | Melting Points | | | | Literature Value | Measured Value | Mnacac3 | 0.989 | Strong Brown | 160 °C | 150-159.5°C | Synthesis of Mn3+ Complex The reaction mixture of 1.3 g of MnCl2.4H2O and 3.4g of sodium acetate in 50cm3 of distilled water. Then 5 g of acetyl acetone allow shake then addition of 0.29 g of KMnO4 in 12.5cm3 of distilled water. A strong black of 2.19 g products was obtained then brown acac after recrystallization was obtained. The equation below
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Aqueous Acid/Base Chemistry Resources: Harris ‘Quantitative Chemical Analysis’ Review: Pure water has a pH = 7 Autodissociation: H2O (( H3O+ + OH- K = [H3O+][OH-]/[H2O] -log[H3O+] = 7 [H3O+] = 10-7 M = [OH-] [H2O] = 55.56 M K = 1.8 x 10-16 ; pKa = 15.74 pKa is the acid dissociation constant; low pKa (strong acid‚ high pKa (weak acid we can also write Kw = [H3O+][OH-] Kw = 10-14 In water‚ pH + pOH = 14 pH scale Strong
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grams0.256 grams X 100 % Recovery= 0.16 x 100=16% There are many reasons why the percent recovery is much less than 100%. For example‚ one source of error may have been that the separatory funnel containing the acidified phenylalanine and ethyl acetate may not have separated well enough after being shaken together in the funnel. Not allowing an adequate amount of time for the aqueous and organic layers to separate will cause portions of the layers to be contaminated. This would affect the experimental
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Journal of Biotechnology 152 (2011) 114–124 Contents lists available at ScienceDirect Journal of Biotechnology journal homepage: www.elsevier.com/locate/jbiotec Review Halophilic anaerobic fermentative bacteria Anniina T. Kivistö ∗ ‚ Matti T. Karp Tampere University of Technology‚ Department of Chemistry and Bioengineering‚ Tampere‚ Finland a r t i c l e i n f o a b s t r a c t In hypersaline environments bacteria are exposed to a high osmotic pressure caused by the surrounding
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per kilogram of dry soil). Because of the differing methods to estimate CEC‚ it is important to know the intended use of the data. For soil classification purposes‚ a soil’s CEC is often measured at a standard pH value. Examples are the ammonium acetate method of Schollenberger and Dreibelbis (1930) which is buffered at pH 7‚ and the barium chloride-triethanolamine method of Mehlich (1938) which is buffered at pH 8.2. Such CEC measures can result in values very different from the CEC of
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The Cataract 3 by Bridget Riley is a Polyvinyl Acetate painting involving a series of wavy‚ horizontal lines across a 7’3 ¾” x 7’3 ¾” canvas. Bridget Riley is famous for making wonderfully illusive optical art (op art) pieces including Cataract 3. The work consists of very concentrated lines with light blue tones on the top and bottom that combine with a red hue towards the middle. This combination of primary color values causes the piece to appear almost violet (a secondary color) from far away
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glucose molecule. The end products of this reaction are two CO2 and two Acetyl CoA (acetate bounded to Coenzyme A). The Citric Acid Cycle is composed of eight reactions that also occur in the matrix of the mitochondria. This reaction starts with Acetyl CoA and Oxaloacetate (OAA). CoA is first release. The Acetyl group is then oxidized to two CO2. OAA is then regenerated and is getting ready to accept another acetate group. Reduction of NAD+‚ FAD+ and GDP‚ happen all over this cycle in preparation for
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(Name) Ocean’s Mirror- Nature’s own natural reflective surface. Inspired by the light reflecting onto the ocean. Purpose of Gauge- • To record the different light patterns surfacing across the water from the sun at different stages of the day‚ particular in the morning up until 10 a.m. when the sun begins to shine at its brightest point. Time • Approximately 6:45 a.m. when sunrise began up until to 10:35 when the sun began its strongest starting point during the day. Mapping/ Inspiration
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experiment‚ the online simulation was used to determine which substances were endothermic or exothermic when dissolved in water. According to the simulation‚ sodium chloride and ammonium chloride was observed to be endothermic. Calcium chloride‚ sodium acetate‚ sodium carbonate‚ and lithium chloride was observed to be exothermic. As sodium chloride and ammonium chloride was observed to be endothermic‚ those two salt substrates was not used in the experiment as the goal of the experiment was to increase
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Chemical Engineering and Processing 46 (2007) 774–780 Reactive distillation: The front-runner of industrial process intensification A full review of commercial applications‚ research‚ scale-up‚ design and operation G. Jan Harmsen a‚b a Shell Global Solutions‚ Shell Research and Technology Center Amsterdam‚ P.O. Box 38000‚ 1030 BN Amsterdam‚ The Netherlands b RijksUniversiteit Groningen‚ Nijenborgh 4‚ 9747 AG Groningen‚ The Netherlands Received 19 June 2007; accepted 20 June 2007 Available
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