ISE Determination of Fluoride Content in Various Substances CHM 222 – A 4 / 20 / 2007 Introduction: The ion selective electrode used was made up of a silver / silver chloride reference electrode and a glass electrode. The pH of the electrochemical cell is determined by monitoring the electrical potential difference between the half-cells. The glass electrode is an ion selective electrode (ISE)‚ which only responds to the hydronium ion concentration / activity in a solution under a
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. Experiment :B-03 Determination of self inductance of a coil by Rayleigh’s method. Submitted by Muhammed Mehedi Hassan Group A ;Batch-09 Second Year‚ Roll–SH 236 Student of Physics Department‚ Uinversity of Dhaka. Date of experiment September 27‚ 2011. Date of submission October 30 ‚ 2011. 1 Experiment :B-03 Determination of self inductance of a coil by Rayleigh’s method. Theory : Figure 1: Rayleigh’s method circuit diagram. If a potential V applied to a condenser of capacitance C‚ imparts
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Indirect determination of ∆H via Hess’s law Conclusion & Evaluation Research question: What is the ∆H/mol of hydration of CuSO4 (anh)? The ∆H/mol of hydration of CuSO4 (anh) is -70.2‚ according to the experiment done in class. It was determined by applying the Hess’s law‚ using two reactions 1) CuSO4-5H2O ----> CuSO4 (aq) + 5H2O 2) CuSO4 (anh) -----> CuSO4 (aq) According to the Hess’s Law‚ which states that the total enthalpy change for a chemical reaction is the same disregarding
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ABSTRACT/ SUMMARY After preliminary heating‚ the sample is cooled at a specified rate and examined at intervals of 1°C for flow characteristics. The lowest temperature at which movement of the specimen is observed is recorded as the pour point. INTRODUCTION In the cloud point experiment‚ waxes will appear and thickens the oil and clogs fuel filter and injectors in engines. The wax also accumulates on the cold surfaces and forms an emulsion with water. The appearances of cloud point determine
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Abstract In this lab‚ we tested the effects of temperature on fungal amylase and bacterial amylase (Aspergillus oryzae and Bascillus Licheniformis). We used 4 different temperatures in Celsius 0‚ 23‚ 58‚ and 89 for both fungal and amylase. For 10 minutes‚ every 2 minutes we would use 3 drops of each amylase and mix it with iodine to observe the presence of starch at each temperature. We conducted this experiment for both bacterial and fungal amylase. Results were reached based on the color of the
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Construction of a Standard Curve for the Determination of Protein Concentration 09/13/12 PCB 3023-007 Results Figure1: Standard curve. This graph was constructed from the fixed amounts of Bovine Serum Albumin (BSA). Varying amounts of BSA at a concentration of .5µ/µl were mixed with the water and 1mL of coomassie dye. The equation y=0.0259x +0.0511 represents the best fit line for a data set taken from µg of protein equals two to ten µg. Optical density (OD) was surveyed using a Mach
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Determination is a characteristic very few people have. But‚ in this case the main character has this uncommon attribute. In the book Through my Eyes (Tebow)‚ Tim‚ a determined football player‚ shows a plethora of events of him never giving up. Tim Tebow never gave up on anything‚ including his education‚ football career‚ and farming. School work was especially challenging for Tim considering that he was diagnosed with dyslexia as a child. Isn’t it hard to imagine getting a good education with
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Why do we need a diploma to succeed in business? What do we have behind us after graduation? On the one hand - specific knowledge and skills with the hope to use them in practice when applying for a job. On the other hand - the diploma‚ which ostensibly shows that this baggage we have. "We need a person with a higher education ..." - these words are full of almost all offers of employment. How is it important for an employer‚ what high school diploma in your hand? Does a diploma
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LAB REPORT # 1 DENSITY DETERMINATION CHEMISTRY 100 – 04 INTRODUCTION: The purpose of this experiment is to find out the density of the unknown solid object by determining the mass and the volume through the experiment. To do this we will be get the mass of the object and determine the volume of the object by placing it into a liquid. Then we will divide mass by volume and get its density. PROCEDURE: 1) Obtain a solid metal 2) Weigh the dry sample carefully to
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Determination of An Unknown Amino Acid From Titration Abstract Experiment 11 used a titration curve to determine the identity of an unknown amino acid. The initial pH of the solution was 1.96‚ and the pKa’s found experimentally were 2.0‚ 4.0‚ and 9.85. The accepted pKa values were found to be 2.10‚ 4.07‚ and 9.47. The molecular weight was calculated to be 176.3 while the accepted value was found to be 183.5. The identity of the unknown amino acid was established to be glutamic acid‚
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