3) A cup of rather dilute hot tea initially at 140 degrees F is served to a customer at HowardJohnson's. Unfortunately,before they get around to drinking it, it has100 degrees F. Calculate the change inspontaneously cooled off toentropy of the universe forrestaurant (the surroundings) is 70 degrees F.200qthis process. The temperature of theThe mass of the tea is 200g.Suppose that our customer complains about the cold tea and is given a second cup of hot tea.Feeling especially hungry (for tea?) they mix the hot tea and the cold tea together so that theywill have twice as much tea (albeit luke warm). Assuming that the mixing occurs spontaneouslyand adiabatically, what is the final temperature of the tea, the change in entropy of the tea, andthe change in entropy of the universe for the mixing process?

The entropy change of a system due to heat flow is given by ∆S = QTrev, where Q = the heat flow…

3) A cup of rather dilute hot tea initially at 140 degrees F is served to a customer at Howard before they get around to drinking it, it has 100 degrees F. Calculate the change in Johnson's. Unfortunately, spontaneously cooled off to 200 entropy of the universe for restaurant (the surroundings) is 70 degrees F. this process. The temperature of the The mass of the tea is 200g.

3) A cup of rather dilute hot tea initially at 140 degrees F is served to a customer at Howard before they get around to drinking it, it has 100 degrees F. Calculate the change in Johnson's. Unfortunately, spontaneously cooled off to 200 entropy of the universe for restaurant (the surroundings) is 70 degrees F. this process. The temperature of the The mass of the tea is 200g.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter1: Temperature And Heat

Section: Chapter Questions

Problem 1.3CYU: Check Your Understanding If 25 kJ is necessary to raise the temperature of a rock from 25 to 30 ,...

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