Enough heat flows into 73.0 kg of ice at 0 degrees C to melt it into water at 0 degrees C. The ice is floating in water at 15.0 degrees C, the source of the heat. What is the entropy change of the universe?

The Latent Heat of Fusion of water is 334,000 J/kg.

The Latent Heat of Vaporization of water is 2,203,000 J/kg