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faster rate of oxidation at the anode. This means a greater number of moles of product. A higher voltage applied to the cell means that the cathode will have enough current to bring about reduction and the same goes for anode, it will have enough energy to bring about oxidation. Higher voltage enables the electrolytic cell to oxidize or reduce difficult compounds. And this can change what products will form in an experiment. Both Voltage and current will determine what will form in a cell.…

additive prepared with different percentages(0,15,25,35 and 45) wt.% and different thickness. The experimental results showed that the D.C electrical conductivity increased with increasing the alumina concentrations and temperature. Also the activation energy change with increasing of additional alumina. The dielectric constant, dielectric loss, A.C electrical conductivity are changed with change the concentration of the filler and frequency of applied electrical field. Keywords: Composites,…

are separated by a distance (a), and electrodes p1 and p2 are separated by a distance (b). the distance between the potential electrodes pair c1-c2 is the same as the distance between the potential electrodes pair P1-P2 and the distance between the centers of the respective pairs is (n+1) a, the “a” spacing is initially still fixed and the “n” factor is increased from 1 to 2 to 3 until 6 in order to increase the depth of investigation. the apparent resistivity determined by this arrangement…

Introduction and Overview: For this extended essay, I will be working on building and optimizing different sized water rockets to find out the optimum amount of fuel (water) for each the different rocket sizes. I will be measuring the ranges at which each rocket will fly to find out the optimum fuel level. A brief summary of water rockets: A water rocket is made up of a selection of parts to provide its successful launch: the nose cone which will make the rather snub-nosed end of the large…

1. Redox Catalyst Catalyst is defined as a substance that increases the rate of a chemical reaction without changing its chemical composition and affecting the standard Gibbs free energy, by lowering the activation energy of a chemical reaction. It does so by providing an alternative reaction pathway. In redox reaction, the key chemical event is the net movement of electrons from one reactant to the other. The oxidation state of atoms are changed. Transition metal is used as redox catalyst due…

temperature to give primary gas and carbonaceous residue and in the second there is modification in primary gas due to water gas shift reaction and steam reforming reaction. The total Gibbs free energy of a system is a function of Gibbs free energy of each of the components. For minimizing the Gibbs free energy, the mass of each individual element present in the gaseous mixture is considered. The amount of an element in the resulting gas mixture produced must be equal to its amount obtained from…

Thermal comfort is maybe the most important and easily defined parameter of indoor environmental quality. It is largely responsible for the occupants discomfort and well being and users require a thermally comfortable environment in order to identify that a building is performing well. Thermal comfort studies declare that thermal sensation responses to a given motivation and depends upon the occupants state of thermal adaptation which correlated also on geographic location and climate, time of…

from the temkin plot are as follows: A= 0.866 L/g, B=0.855 J/ mol. This model is not applicable for present work as the R2 value is low (0.827). [Table 1] The Dubinin – Radushkevich (D–R) isotherm model was used to estimate porosity, apparent free energy and characteristic of adsorption. The D–R isotherm does not suppose a homogeneous surface and constant sorption potential and it is shown in the following equation [27]: qe= Qm exp (-KƐ2) The linear form of D-R isotherm is as: ln qe=ln Qm-KƐ2…

transport in the disordered organic semiconductors and modeling the electrical characteristics OTFTs [27, 58]. Indeed, the notion of VRH implies that a free carrier either may over a long distance with low activation energy or hop over a short distance with high activation energy [22-25, 58]. A crucial feature of the VRH model is the determination of the density of states (DOS).…

5. SUMMARY We have derived Laplace's equation for steady-state water flow in two dimensions and have explained how the equation is solved by three Relaxation Methods: Jacobi, Gauss Siedel and Successive Over-Relaxation on a discrete 20 10 grids. The numerical method was illustrated by a Matlab programming code. 6. References [1] John D. Anderson, JR (1995). Computational Fluid Dynamics: The Basics with Applications .McGraw Hill, Inc. [2] Anderson, J.D. (1995). Computational Fluid Dynamics.…