A carnot heat engine is supplied with a high temperature
A Carnot heat engine is supplied with a high temperature heat source at a rate of 200 kW. If the power output of the heat engine is 120 kW, determine the required source temperature if the heat sink temperature is 20 °C.
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A coal fired power plant can be modeled as a heat engine. If the power output of the plant is 200 MW and the thermal efficiency is 42%, determine the amount of coal used per day if the heat of combustion from the coal is 24,000 kJ/kg.
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A coin dealer, offered a rare silver coin, suspected that it might be a counterfeit nickel copy. The dealer heated the coin, which weighed 18.0 g to 100°C in boiling water and then dropped the hot coin into 26.5 g of water at T = 16.5°C in
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The standard free energy of activation of one reaction A is 85.50 kJ mol-1 (20.43 kcal mol-1). The standard free energy of activation of another reaction B is 78.70 kJ mol-1 (18.81 kcal mol-1).
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