A 25 kg copper block at 373 K is dropped into an insulated tank that contains 80 L of water at 293 K. Assume that the specific heat of steel is 0.72 kJ/kg-K and that of oil is 2.4 kJ/kg.K. 1.  Determine the final equilibrium temperature. Answer in kJ/K 2.  Calculate the total change in entropy. Answer in  kJ/K  3.  Compute the amount of work lost in the process. Answer in kJ/K

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Entropy

In physics, entropy means the amount of disorder or the degree of randomness associated with a thermodynamic system. The system is not self-organized when the entropy of the system is high. For instance, when a system is at an elevated temperature, its molecules are in random motion, vibrating and colliding with each other. During this scenario, the probability of finding a molecule at a particular place twice, is low. Under this circumstance, the system can be said to be in a high entropy.