A 2.64-kg copper part, initially at Tc = 250oC, is plunged into a tank containing 4 kg of liquid water, initially at Tw = 25oC. The copper part and water can be modeled as incompressible with specific heats cc = 0.385 kJ/kg·K and cw = 4.2 kJ/kg·K, respectively. Use the copper part and water as the system. Ignore heat transfer between the system and its surroundings. Determine the final equilibrium temperature Tf, in oC, and the amount of entropy produced within the tank, 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.