Two metal objects, A and B, each of mass 64.5 g, are prepared at 360 K and 280 K, respectively. They are brought into thermal contact and allowed to reach thermal equilibrium while insulated from the rest of the universe (i.e. no heat exchange). Object A has a specific heat of cs = 0.285 J/g.K, and object B has a specific heat of cs = 0.210 J/g.K. (a) What is the final temperature (in K) of the system once it reaches thermal equilibrium? (b) What is the entropy change (in J/K) for the system of two objects as they go through the process of reaching thermal equilibrium?
Two metal objects, A and B, each of mass 64.5 g, are prepared at 360 K and 280 K, respectively. They are brought into thermal contact and allowed to reach thermal equilibrium while insulated from the rest of the universe (i.e. no heat exchange). Object A has a specific heat of cs = 0.285 J/g.K, and object B has a specific heat of cs = 0.210 J/g.K. (a) What is the final temperature (in K) of the system once it reaches thermal equilibrium? (b) What is the entropy change (in J/K) for the system of two objects as they go through the process of reaching thermal equilibrium?
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Transcribed Image Text:Two metal objects, A and B, each of mass 64.5 g, are prepared at 360 K and 280 K,
respectively. They are brought into thermal contact and allowed to reach thermal
equilibrium while insulated from the rest of the universe (i.e. no heat exchange). Object A
has a specific heat of cs = 0.285 J/g.K, and object B has a specific heat of cs = 0.210 J/g.K.
(a) What is the final temperature (in K) of the system once it reaches thermal equilibrium?
(b) What is the entropy change (in J/K) for the system of two objects as they go through the
process of reaching thermal equilibrium?
Expert Solution
Step 1
Given deta
Mass of metal A= mass of metal B = 64.5g
Temperature of metal A (T1)=360K
Temperature of metal B (T2)=280K
Special heat of metal A (Cs1)=0.285J/g.K
SPacific heat of metal B ( Cs2)=0.210J/g.K
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