Group 2 Science Investigatory Project I Title: Potato Battery II Objective: We only need a potato‚ a couple nails and a piece of wire to make a potato battery. It’s a fun science project that helps show the way things work in a battery by using everyday items we see around the house. The goal is to learn more about electricity‚ and possibly a few new science terms along the way. III Materials: * Two Potatoes * Two short pieces of heavy copper wire * Two common galvanized nails
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2.1 Introduction. The measurement of the RI. of liquids is a significant work in science and engineering.. Transmission or reflection disclosures near critical angles linked to TIR. are common ways in RI. measurements. Modified Abbe refractometers and commercial Abbe refractometers are instruments for measuring the RI. of a sample using those ways. The RI. resolution of those instruments. roughly extent from 10−4 to 10−5 depending on their cost and complexity. RI. of muddy colloidal
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| Determination of the Critical Micelle Concentration | | | | Introduction: Purpose: The purpose of this experiment is to use the Conductometric method to determine the critical micelle concentration of SDS. Materials and Equipment: * SDS- Sigma Aldrich‚ Lot: 38H0080‚ S/N: L-439‚ * NaCl- Food grade Great Value * SDS 20% solution- Fisher Biotech‚ S/N: BP1311-200‚ Lot: 468059 * Wave generator- Pasco Scientific‚ S/N PI-9587C * Ammeter- Keithley Auto-ranging
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There are literally thousands of Ball Mills in use throughout the world‚ many of them in the cement industry. Few installations have a comprehensible method of controlling and recording exactly what ball size distribution is in‚ or should be in‚ the Ball Mill. As mills are supplied for ever increasing capacities‚ the ball size distribution and wear exact a tremendous effect on the profitability of producing finish cement. Improper size distribution or filling level of the ball charge can easily reduce
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Decomposition Reaction-Electrolysis of Water Introduction: Demonstrate the decomposition of water in simple but very colorful and dramatic fashion on an overhead projector. Concepts: • Decomposition reaction • Oxidation–reduction • Electrolysis • pH Materials: Sodium Chloride/universal indicator solution‚ NaCl‚ 25 mL Overhead projector Pencil lead‚ 0.7 mm Battery lead with alligator clips Petri dish‚ disposable Battery‚ 9-Volt
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1 11/8/2006 Techniques of Polymerisation: 1) Bulk or Mass Polymerisation: Method: Pre-polymerisation stage. Monomer is in liquid state and initiator dissolved in monomer is taken in a vessel and heated initially to poln temp. by a hot jacket to initiate the reaction. Monomer is added with constant agitation/ stirring for effective heat and mass transfer. Polymerisation reaction involves extensive bond formation in homogenous system and is exothermic. (25 – 30% poln) Post poln stage :- As the
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The purpose of this experiment was to determine the weight percentage of copper in brass. This was achieved by performing a redox titration known as iodometry. Copper‚ which was obtained from the brass‚ was used to react with iodide to produce iodine. Iodine was then titrated with thiosulfate. In this experiment‚ the amount of titrant dispensed correlates with the amount of copper; therefore‚ the amount of copper in brass was calculated by using the data recorded. In this experiment‚ the analyte
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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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Electrolysis design internal assessment Introduction to experiment Electrolysis is a method using a direct electric current to drive a non-spontaneous chemical reaction. It involves the stage in the separation of elements from naturally occurring sources such as ores. In this experiment‚ methods to alter rate of electrolysis will be attempted to be discovered. Although many contributing factors could affect the rate of electrolysis which could include internal energy within the electrolyte or
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Fatima Mammadova Afagi M5A Chemistry Mr. Brotherton One World Essay What limits the way that batteries can change the way we live? Battery is a device‚ which consists of one or more electrochemical cells‚ which converts stored chemical energy into electrical energy. Batteries are used everywhere in our daily life. We use them in technology‚ like mobile phones‚ computers‚ music players and etc. We use them for medical reasons‚ like wheelchairs‚ defibrillator‚ pace makers‚ hearing aids and many
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