entropy change problem (I have done this question over and over again and do not
ID: 1419704 • Letter: E
Question
entropy change problem (I have done this question over and over again and do not understand why the delta S 2 value under part b is incorrect, please help and explain!) Question Details 1 Previous Answers ColFunPhyst 14 P Two copper blocks, each of mass 1.39 kg, initially have different temperatures,t equilibrium. No heat is lost to the surroundings. mass 1 .39 kg, initially have different temperatures,-21° C and t2-29. C. The blocks are placed n contad wth each other and come to thermal 21 C and t 29 c (a) Find the final temperature of the blocks 25 Find the heat transferred between them. 2141 (b) Find the entropy change of each block during the time interval in which the first joule of heat flows AS 0034 AS2-0033 (c) Estimate the entropy change of each block after it has reached thermal equilibrium. Use each block's average temperature during the process in calculating the estimated values of AS AS1 7.23 AS2 -7.13Explanation / Answer
b)
2) the formula for entropy S=Q/T, where Q is 1J, and T can be used as the finall temperature, the second block, heat is taken out from the block since the temperature of the second block is higher than the first one,
S2= -1J/(29+273)K= - 0.003311 J/K
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