Halliday, Resnick & Walker — The Kinetic Theory of Gases: Problem 21

21 Suppose 0.825 mol of an ideal gas undergoes an isothermal expansion as energy is added to it as heat \(Q\). If Fig. 19-20 shows the final volume \(V_f\) versus \(Q\), what is the gas temperature? The scale of the vertical axis is set by \(V_{fs} = 0.30 \text{ m}^3\), and the scale of the horizontal axis is set by \(Q_s = 1800 \text{ J}\).