An iron horseshoe of mass 1.47 kg is taken from a furnace at 660 ◦C and dropped into 1.83 kg of water at 8.5 ◦C. If no heat is lost to the surroundings, determine the total entropy change. The specific heat of water is 4186 J/K · kg and of iron 448 J/K · kg. Answer in units of J/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.