You are holding a 500-g dark chocolate bar, and then the chocolate starts to melt at 45 degrees C. What is the change in entropy? (Note: The latent heat of fusion of chocolate Lf = 1.5 x 10^5 J/kg.
You are holding a 500-g dark chocolate bar, and then the chocolate starts to melt at 45 degrees C. What is the change in entropy? (Note: The latent heat of fusion of chocolate Lf = 1.5 x 10^5 J/kg.
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter12: The Laws Of Thermodynamics
Section: Chapter Questions
Problem 48P: A 65-g ice cube is initially at 0.0C. (a) Find the change in entropy of the cube after it melts...
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You are holding a 500-g dark chocolate bar, and then the chocolate starts to melt at 45 degrees C. What is the change in entropy? (Note: The latent heat of fusion of chocolate Lf = 1.5 x 10^5 J/kg. Calculate first the heat needed to melt the chocolate using the formula Q = mL^f, where Q is the amount of heat needed to melt the chocolate, m is the mass of the chocolate, and Lf is the latent heat of fusion of chocolate.)
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