An aluminum bar of mass 2.00 kg at 300 °Cis thrown into a lake. The temperature of the water in the lake is 15.0 "C: the specific heat capacity of aluminum is 900 J/(kg K) ASiae 1780 J/K Previous Answers v Correct • Part B Has the entropy of the aluminum bar decreased or increased? View Available Hint(s) O 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. O We dont have enough information to determine whether the entropy of the aluminum bar has decreased or increased. Previous Answers v Correct • Part C Since the aluminum bar is not an isolated system, the second law of thermodynamics cannot be applied to the bar alone. Rather, it should be applied to the bar in combination with its surroundings (the lake). Assume that the entropy change e .What is the change in total entropy ASua? Express your answer numerically in joules per Kelvin View Available Hint(s) 2 keyboard shortouts p emplates Bymbols undo rego Teset ASutal- 2008 J/K Submit Previous Answers X Incorrect; Try Again; One attempt remaining

An aluminum bar of mass 2.00 kg at 300 °Cis thrown into a lake. The temperature of the water in the lake is 15.0 "C: the specific heat capacity of aluminum is 900 J/(kg K) ASiae 1780 J/K Previous Answers v Correct • Part B Has the entropy of the aluminum bar decreased or increased? View Available Hint(s) O 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. O We dont have enough information to determine whether the entropy of the aluminum bar has decreased or increased. Previous Answers v Correct • Part C Since the aluminum bar is not an isolated system, the second law of thermodynamics cannot be applied to the bar alone. Rather, it should be applied to the bar in combination with its surroundings (the lake). Assume that the entropy change e .What is the change in total entropy ASua? Express your answer numerically in joules per Kelvin View Available Hint(s) 2 keyboard shortouts p emplates Bymbols undo rego Teset ASutal- 2008 J/K Submit Previous Answers X Incorrect; Try Again; One attempt remaining

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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