High- quality audio amplifiers generate large amounts of heat. To dissipate the heat and prevent damage to the electronic devices, manufacturers use heat- radiating metal fins. Would it be better to make these fins out of iron or aluminum? Why?
Answer to relevant QuestionsWrite reactions that correspond to the following enthalpy changes: a. ΔHof for solid aluminum oxide b. the standard enthalpy of combustion of liquid ethanol [C2H5OH(l)] Consider the following reaction at 248oC and 1.00 atm: CH3Cl(g) + H2(g) → CH4(g) + HCl(g) For this reaction, the enthalpy change at 248oC is 283.3 kJ/ mol. At constant pressure the molar heat capacities (Cp) for the ... A gaseous hydrocarbon reacts completely with oxygen gas to form carbon dioxide and water vapor. Given the following data, determine ΔHof for the hydrocarbon: ΔHrxn = –2044.5 kJ/ mol ΔHof (CO2) = –393.5 kJ/ mol ΔHof ...One mole of an ideal gas with a volume of 1.0 L and a pressure of 5.0 atm is allowed to expand isothermally into an evacuated bulb to give a total volume of 2.0 L. Calculate w and q. Also calculate qrev for this change of ...A green plant synthesizes glucose by photosynthesis as shown in the reaction 6CO2(g) + 6H2O(l) → C6H12O6(s) + 6O2(g) Animals use glucose as a source of energy: C6H12O6(s) + 6O2(g) → 6CO2(g) + 6H2O(l) If we were to assume ...
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