new invention has discovered a method to stabilise an enzyme during freezing providing the enzyme in a zwitteronic buffer solution. A zwitterionic composition is useful as a surface active agent in aqueous solutions. The buffer solution has the capacity to stabilise an enzyme‚ such as glocuse oxidase‚ in a liquid state whilst providing protection if the the end solution is frozen. The zwitterionic buffer can stabalise the activity of enzymes by preventing large pH shifts during freezing.
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SOLUTION MINING A Laboratory Exercise in Extracting Copper from a Synthetic Copper Ore Your Name __Mel Hine______________________ Partner’s Name __Jay Ranson____________________ Date _October 2‚ 2012____________ Introduction This laboratory exercise involves the use of dilute sulfuric acid (H2SO4) to leach copper
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Il bilancio – Strumento di analisi per la gestione 4/ed R. N. Anthony‚ L. K. Breitner‚ D. M. Macrì Copyright © 2008 – The McGraw-Hill Companies srl CAPITOLO 8 LE PASSIVITA’ E IL CAPITALE NETTO Problemi Problema 8-1 Laribee SpA a. (1) Including current liabilities.............. Debt/Equity Ratio $97‚920 = 66.7% $146‚880 Debt/Capitalization Ratio Rarely calculated this way. (2) Excluding current liabilities except current portion of long-term debt..... Excluding all current liabilities
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Sollutions CHAPTER 15 DISCUSSION QUESTIONS 1. FIVE PRIORITY SEQUENCING RULES ARE: First come‚ first served (FCFS); or First in‚ first out (FIFO): Jobs are sequenced in the order in which they arrive at the workstation. Earliest due date (EDD): Jobs are sequenced in the order in which they are due for delivery to the customer. Shortest processing time (SPT): Jobs are sequenced in order of the processing time required at the workstation‚ with the job requiring
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BUFFER SOLUTIONS CONTENTS 1. Introductions. 2. Principles of buffering. 3. Applications a. Simple buffering agents. b. "Universal" buffer mixtures. c. Common buffer compounds used in biology. 4. Buffer capacity. 5. Calculating buffer pH a. Monoprotic acids. b. Polyprotic acids. 6. Biblography. INTRODUCTION A buffer is an aqueous
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Digital PH Conductivity & Temperature Meter | 8000 | MT-106 | Digital PH Cum Temperature Meter | 5800 | ACS | PH Electrode | 1000 | ACS | Temp. Probe | 650 | ACS | Electrode Stand | 450 | | COLORIMETER | | MT-107 | Microprocessor Photo Colorimeter‚ 8 Filter | 9200 | MT-108 | Deluxe Photo Colorimeter‚8 Filter | 7500 | MT-109 | Digital Hemoglobin Meter | 7000 | MT-110 | Auto Photo Colorimeter | 7200 | MT-111 | Digital Photo Colorimeter | 6200 | | CONDUCTIVITY METER | |
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This assignment must be submitted no later than November 22nd‚ 2011. 1. What is a true solution? Explain why the solute does not settle out of a solution. Is it possible to have one solid dissolved in another? Explain. In metals it would be called an alloy. 2. An aqueous solution of KCl is colorless‚ KMnO4 is purple‚ and K2Cr2O7 is orange. What color would you expect of an aqueous solution of Na2Cr2O7? Explain. Orange. 3. Explain why hexane will dissolve benzene but will not dissolve
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Solution A homogeneous mixture of two or more substances with each substance retaining its own chemical identity. Solute – substance being dissolved. Solvent – liquid water. General Properties of a Solution 1. Contains 2 or more components. 2. Has variable composition. 3. Properties change as the ratio of solute to solvent is changed. 4. Dissolved solutes are present as individual particles. 5. Solutes remain uniformly distributed and will not settle out with time. 6. Solute
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Joscely Garris Professor Vinh Hoang CHEM 1151L – 254 25 October 2013 Preparation of Viscous Solution This report discusses an experiment to study the relationship of solute/solvent and the calculations involved to measure the concentration of the solution. The first experiment to take place is the preparation of a salad dressing using xanthan gum solution‚ water and oil. Commonly used as a food thickening agent‚ Xanthan gum is a large molecule composed of several saccharides linked together
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Mixtures and Solutions can often become confusing because solutions are mixtures‚ but not all mixtures are solutions. A mixture can either be homogeneous or heterogeneous. A homogeneous mixture is where the mixture’s components are distributed uniformly within the mixture. A heterogeneous mixture is where the components are not uniform. Mixtures can either be miscible or immiscible‚ the difference being whether or not the mixture forms a homogeneous mixture or not. In a solution a solute is soluble
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