Vinegar as Alternative Battery An Investigatory Project Presented to The Faculty of the High School Department Surigao Education Center Km. 2‚ Surigao City _______________________________________________ In Partial Fulfillment of the Requirements in Physics IV _______________________________________________ By: Edradan‚ Dhaniel Jefferson Yaun‚ Mary Allyssa Concon‚ Leonel Galos‚ Jancirfil Jimena‚ Rimar Villarojo‚ Kerr March 2013 APPROVAL SHEET Vinegar as Alternative Battery Prepared &
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Attempting to extend battery life by connecting power to the device while on will cause the device to enter standby mode. While charging‚ the charging LED will be RED. After the headset has fully charged the charging led will turn GREEN. Electrodes The EPOC electrodes are modular allowing for easy replacement for alternative or replacement sensor modules. While the device is set to initially start
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the sarcolemma‚ and the subsequent production of a muscle contraction. Muscle contractions are a direct byproduct of motor unit recruitment‚ and for this lab we can examine these effects with aid of a finger pulse transducer and a bar stimulus electrode. The finger pulse transducer generates a force peak amplitude that displays the extent to which a muscular twitch responds to a nerve stimulus‚ and nerve frequency. Therefore‚ the purpose of this lab was to observe how the motor unit recruitment
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Engineering Materials Week 12 17.7 An electrochemical cell is constructed such that on one side a pure Zn electrode is I contact with a solution containing ions at a concentration of M. The other cell half consists of a pure Pb electrode immersed in a solution of ions that has a concentration of M. At what temperature will the potential between the two electrodes be +0.568 V? 17.15 (a) Cite the major differences between activation and concentration polarizations. Activation polarization is the condition
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in some ionic solids. Conduction occurs in electrolytic conductors as both positive ions and negative ions migrate toward electrodes. In contrast to electronic conduction‚ electrolytic conduction involves a transport of ions from one part of the conductor to another. Further‚ the flow of current in an electrolytic conductor is accompanied by chemical changes at the electrodes. (Examples of such reactions can be found on pages 743 -747 of your text.) Electrolytic conduction plays an important role
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4 Titration Curve of an Amino Acid pH Simple amino acid Acidic amino acid Basic amino acid 7 OH- equivalents Objectives: A) To determine the titration curve for an amino acid and B) to use this curve to estimate the pKa values of the ionizable groups of the amino acid and the amino acid’s pI. Introduction: A titration curve of an amino acid is a plot of the pH of a weak acid against the degree of neutralization of the acid by standard (strong) base. Consider the ionization
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ratio because pKa is constant. The pH of any solution can be accurately determined by pH metric method and if the ratio is known‚ the dissociation constant can be calculated. Apparatus: Material Quantity Uncertainties pH Meter 1 ± 0.02 pH Glass Electrode 1 - Volumetric Flasks (50cm3) 5 - Beaker (1000cm3) 2 - Beaker (50cm3) 1 - Water Bath 1 - Measuring Cylinder (50 cm3) 1 ± 0.5 cm3 Measuring Cylinder (10 cm3) 1 ± 0.05 cm3 Acetic Acid (0.1M) - - Sodium Acetate (0.1M) - - Potassium Hydrogen phthalate
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known as a Voltaic cell. It was named after Luigi Galvani and Alessandro Volta. A galvanic cell is capable of producing an electric current from a redox reaction that occurs within it and consists of two half cells. Each half cell consists of an electrode and electrolyte and a salt bridge. In a galvanic cell one metal can undergo reduction and the other oxidation. A typical galvanic cell is based on the spontaneous redox reaction: Net Ionic Equation Zn(s) + Cu2+(aq) → Zn2+(aq) + Cu(s) Half Equations
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Welding Operations : There are two types of welding being done: * METAL INERT GAS WELDING ( MIG ): It is a welding process in which an electric arc is formed between a consumable electrode wire electrode and a work piece metal‚ which heat the work piece metal‚ causing them to melt‚and join. Along with a wire electrode a shielding gas is fed through the welding gun‚which shields the process from contaminants in the air. The process can be semi –automatic or automatic. A constant voltage‚ direct
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The halides in unknown solution were identified as iodide and chloride based on their experimental E°(Ag/AgX) values‚ -0.16 ±0.01V and 0.22 ±0.02V respectively. These results were both accurate with percent error of 5.96% for iodine and 0.9% for chloride. The literature value of E°(Ag/AgI) and E°(Ag/AgCl) were -0.151V and 0.222V respectively (1). In addition‚ the literature vales lay within the 95% confidence interval for both halides therefore the results were accurate. These results were precise
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