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7B. A 98.2 g copper rod is cooled from 80°C to 25°C by tossing it into a very large swimming pool at 25°C. The temperature of the pool is not appreciably changed in the process. Compute ASyg ASgurr and ASuniv- (Treat the copper rod as the system.) Some possibly useful data for Cu: C=24.44 JK 'mol sys p.m

7B. A 98.2 g copper rod is cooled from 80°C to 25°C by tossing it into a very large swimming pool at 25°C. The temperature of the pool is not appreciably changed in the process. Compute ASyg ASgurr and ASuniv- (Treat the copper rod as the system.) Some possibly useful data for Cu: C=24.44 JK 'mol sys p.m

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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7B. A 98.2 g copper rod is cooled from 80°C to 25°C by tossing it into a very large swimming pool at 25°C. The temperature of the pool is not appreciably changed in the process. Compute ASys, ASur and ASniv- (Treat the copper rod as the system.) Some possibly useful data for Cu: C,m-24.44 J K 'mol 'univ p.m
Transcribed Image Text:7B. A 98.2 g copper rod is cooled from 80°C to 25°C by tossing it into a very large swimming pool at 25°C. The temperature of the pool is not appreciably changed in the process. Compute ASys, ASur and ASniv- (Treat the copper rod as the system.) Some possibly useful data for Cu: C,m-24.44 J K 'mol 'univ p.m
Expert Solution
Step 1

Given information:

The mass of copper (m) = 98.2 g = 0.0982 kg

initial temperature of the copper (T1) = 800 C = 353 0K

The final temperature of the copper rod is (T2) = 250 C = 298 0K

specific heat of the copper (Cpm) = 24.44 J/ K.mol

Heat lost by copper in the pool is given as:

dQ = nCpmdT = 98.263.54(24.44)(298-353)dQ = -2080.713 

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