Chapter 3, Problem 3.23E

A $\text{0}\text{.500-mol}$ sample of an ideal gas has an initial temperature of $298\text{K}$. It is compressed from an initial volume of $13.00\text{L}$ to $5.00\text{L}$ by an external pressure of $\text{2}\text{.45}\text{atm}$, at which point the internal and external pressures are equal. Calculate $\Delta S_{\text{sys}},\Delta S_{\text{surr}},$ and $\Delta S_{\text{univ}}$ for the process.