In this topic's Warm-Up activity, you were asked if more energy is required to melt an iceberg or an ice cube. The obvious answer was that the larger iceberg requires more energy. With your newly acquired knowledge of phase change calculations, you could describe the exact amount of energy it takes for the ice cube and iceberg to change states. The only piece of information you would need is the mass of each object. Of course, you know that both objects are made of water and have the same heat of fusion and vaporization. This means that the larger object will need the larger amount of energy to change phases.