An iron block weighing \(15 \mathrm{~kg}\) at a temperature of \(450^{\circ} \mathrm{C}\) is in a well-insulated container having \(120 \mathrm{~kg}\) of water at \(5^{\circ} \mathrm{C}\). Determine the change in entropy of

(a) the iron block,

(b) the water and

(c) the total process. Assume that the specific heat of iron is \(0.45 \mathrm{~kJ} / \mathrm{kg}-\mathrm{K}\) and that of water is \(4.185 \mathrm{~kJ} / \mathrm{kg}-\mathrm{K}\).