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An aluminum bar of mass 2.00 kg at 330 °C is thrown into a lake. The temperature of the water in the lake is 12.0 °C; the specific heat capacity of aluminum is 900 J/(kg · K). Part C Calculate the change in the entropy of the bar. Express your answer numerically in joules per Kelvin. • View Available Hint(s) ? Submit

An aluminum bar of mass 2.00 kg at 330 °C is thrown into a lake. The temperature of the water in the lake is 12.0 °C; the specific heat capacity of aluminum is 900 J/(kg · K). Part C Calculate the change in the entropy of the bar. Express your answer numerically in joules per Kelvin. • View Available Hint(s) ? Submit

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Constants An aluminum bar of mass 2.00 kg at 330°C is thrown into a lake. The temperature of the water in the lake is 12.0 °C; the specific heat capacity of aluminum is 900 J/(kg·K). Part B Has the entropy of the aluminum bar decreased or increased? • View Available Hint(s) Since the entropy change of a system is always positive, we can deduce that the entropy of the aluminum bar has increased. Since the final lower temperature of the bar means lower average speed of molecular motion, we can deduce that the entropy of the bar has decreased. We don't have enough information to determine whether the entropy of the aluminum bar has decreased or increased. Submit
Transcribed Image Text:Constants An aluminum bar of mass 2.00 kg at 330°C is thrown into a lake. The temperature of the water in the lake is 12.0 °C; the specific heat capacity of aluminum is 900 J/(kg·K). Part B Has the entropy of the aluminum bar decreased or increased? • View Available Hint(s) Since the entropy change of a system is always positive, we can deduce that the entropy of the aluminum bar has increased. Since the final lower temperature of the bar means lower average speed of molecular motion, we can deduce that the entropy of the bar has decreased. We don't have enough information to determine whether the entropy of the aluminum bar has decreased or increased. Submit
An aluminum bar of mass 2.00 kg at 330 °C is thrown into a lake. The temperature of the water in the lake is 12.0 °C; the specific heat capacity of aluminum is 900 J/(kg· K). Part C Calculate the change in the entropy of the bar. Express your answer numerically in joules per Kelvin. • View Available Hint(s) ΑΣΦ ? Submit
Transcribed Image Text:An aluminum bar of mass 2.00 kg at 330 °C is thrown into a lake. The temperature of the water in the lake is 12.0 °C; the specific heat capacity of aluminum is 900 J/(kg· K). Part C Calculate the change in the entropy of the bar. Express your answer numerically in joules per Kelvin. • View Available Hint(s) ΑΣΦ ? Submit
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