Chapter 3, Problem 3.16E

What is the entropy change for the melting of $\text{3}\text{.87}\text{moles}$ of bismuth at its melting point of $\text{271}\text{.3}°\text{C}$? The heat of fusion of solid $\text{Bi}$ is $\text{10}\text{.48}\text{kJ}/\text{mol}$. (Bismuth is one of the few materials, including water, that is less dense in solid form than in liquid; therefore, solid $\text{Bi}$ floats in liquid $\text{Bi}$, like ice floats in water.)