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A problem-solving exercise in thermodynamics, focusing on the combustion of gasoline in an automobile engine. Students will learn how to calculate the change in internal energy of the gases and the change in internal energy of the piston based on given data.
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When gasoline burns in an automobile engine, the heat released (325 J) causes the products CO and H2O to expand, which pushes the pistons outward. Excess heat is removed by the car’s cooling system. If the work associated with the expanding gases is equal to 451 J, how much is the change in internal energy of the gases? How much is the change in 2. internal energy of the piston?