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Balsara, Nitash P.; Newman, John – Journal of Chemical Education, 2013
A methodology for calculating the theoretical and practical specific energies of rechargeable batteries, fuels, and materials is presented. The methodology enables comparison of the energy content of diverse systems such as the lithium-ion battery, hydrocarbons, and ammonia. The methodology is relevant for evaluating the possibility of using…
Descriptors: Science Instruction, Chemistry, College Science, Undergraduate Study
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Pietro, William J. – Journal of Chemical Education, 2009
Students will use the first law of thermodynamics to determine the feasibility of using corn ethanol as an alternative to fossil fuels in automobiles. Energy flow is tracked from the Sun, to photosynthesized carbohydrate, to ethanol through fermentation, and finally to work in the combustion engine. Feasibility is gauged by estimating a…
Descriptors: Fuels, Thermodynamics, Motor Vehicles, Energy
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Dinan, Frank; Stabler, Tom – Journal of College Science Teaching, 2008
This case study stresses the need to broadly consider an entire system, including all of the energy inputs and outputs involved, to determine the real efficiency of that system. It also asks its student audience to consider the role that scientific input plays in policy decision-making processes. It emphasizes that, despite the importance of this…
Descriptors: Decision Making, Energy, Public Policy, Fuels
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van Sark, Wilfried G. J. H. M. – European Journal of Physics, 2007
To reach a sustainable world the use of renewable energy sources is imperative. Photovoltaics (PV) is but one of the technologies that use the power of the sun and its deployment is growing very fast. Several master programs have been developed over the world, including Utrecht University, that teach these technologies. Within the framework of a…
Descriptors: Energy Conservation, Energy, Natural Resources, Conservation (Environment)
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Rettlich, Timothy R.; And Others – Journal of Chemical Education, 1988
Describes a simple, inexpensive experiment in which students determine the heats of combustion of common solid, liquid, and gaseous fuels. The experimental apparatus, procedures, calculations and results are discussed. (CW)
Descriptors: Chemistry, College Science, Computation, Fuels