Determination of Energy Balancing In a fuel cell power vehicle: http://www.scribd.com/doc/49625260/39/Fuel-Cell-Energy-Balances Fuel Cell * What is fuel cell * Why we need fuel cell * History of fuell cells * Mathematical methods * Classification of fuel cells * Parts of a fuel cell * Fuel Cell Setup * Modeling of fuel cell * Fuel cell system design * Advantages and disadvantages of fuel cell * Future scope of fuel cell Energy Balance in Fuel Cells
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THE POTENTIAL OF SPOILED KABAPINE PASTE AS AN ELECTROLYTE IN COMMON DRY CELL _____________________________________ A Science Investigatory Project Presented to the Faculty of the Tupi National High School Science Department ______________________________________ In Partial Fulfilment of the Requirements in Science and Technology IV _______________________________________ by: JESON E. BALLEZA RENZO RONZ S. MATULAC ISAIAH JOSEF C. PALMES MARY FRANCES I. TORIBIO JORIEL THERESA
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Hydrogen Automobiles The effect of pollution that is emitted from vehicles is a serious concern in today ’s society. The cause of this pollution is the toxic emissions from current vehicles. This toxic emissions or pollution destroys the Earth ’s ozone layer or atmospheric gases Acknowledging these facts‚ many are very concerned with the condition of the Earth ’s atmospheric gases in the future. In just a very short time‚ scientists produced a new vehicle which only emits water out of its exhaust
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the electrolyte. Each electrode attracts ions that are of the opposite charge. Positively charged ions (cations) move towards the electron-providing (negative) cathode. Negatively charged ions (anions) move towards the electron-extracting (positive) anode. In this process electrons are either absorbed or released. Neutral atoms gain or lose electrons and become charged ions that then pass into the electrolyte. The formation of uncharged atoms from ions is called discharging. When an ion gains or loses
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as shown in the diagram below | 2. Using sand paper‚ both copper plates were brushed‚ and then dipped into propanone‚ followed by drying both plates using hair drier. | 3. Both plates were then weigh separately and were recorded as initial mass of anode and cathode in the table below.4. Both weighed plate were clipped using crocodile clips and the batteries were placed in the battery socket. After that‚ both plates were immersed in copper (II) solution and the stop watch was started to allow the apparatus
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90696 906960 For Supervisor’s use only 3 Level 3 Chemistry‚ 2008 90696 Describe oxidation-reduction processes Credits: Three 9.30 am Friday 28 November 2008 Check that the National Student Number (NSN) on your admission slip is the same as the number at the top of this page. You should answer ALL the questions in this booklet. A periodic table is provided on the Resource Sheet L3–CHEMR. If you need more space for any answer‚ use the page(s) provided at the back of this booklet and clearly
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11/24/2013 CLASSIFICATIONS of MATERIALS Semiconductor Theory a. Conductor b. Semiconductor c. Insulator • Number of valence electrons is 1-3 with very high conductivity • Number of valence electrons is 4 with intermediate conductivity • Number of valence electrons is 5-8 with very low conductivity Semiconductor Conductors • Has more electrons that are free to move • Supports charge carriers to flow • Support flow of electricity • Has very low resistance allowing
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Each set of nine LEDs will share a common connection amongst their cathodes (negative leads). We’ll refer to each of these sets as a "level". Each of the nine LEDs on a level is connected to the corresponding LED on the other two levels through their anodes (positive leads). These will be as "columns". To start we’ll use a drill to create a jig out of a small piece of scrap wood. The jig will hold the LEDs in place while we solder them. We decided to space the holes around 5/8 of an inch apart (~15 mm)
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HKCEE Chemistry 2007 Paper 1 Section A 1. A is a compound formed from oxygen and magnesium‚ while B is a compound formed from oxygen and fluorine. a) Draw the electronic diagram of A‚ showing electrons in he outermost shells only. (1) b) Draw the electronic diagram of B‚ showing electrons in the outermost shells only. (1) c) Compare the melting points of A and B. Explains your answer. Melting point of A is higher than that of B. Ions of A are linked by strong ionic bonds /
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THYRISTOR RAM Muktesh Waghmare‚ Raman Gaikwad 1: Principle: Thyristor is well-known for its high-current drive capability and its bi-stable characteristics. It has been widely used in power electronics applications. With the exponential advances in CMOS technology tiny thyristor devices can now be easily embedded into conventional nano-scale CMOS. This enables the creation of a memory cell technology with features that include small cell size‚ high performance‚ reliable device operation‚ and
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