2010014705

In the experimental process, the ideal gas is expanded isothermally from an initial pressure of $0.8\mathrm{MPa}$ and volume of $V_1=0.3{\mathrm{m}}^3$ to a final volume of $V_2=1.2{\mathrm{m}}^3$. Find a work done by the gas in the given process. Hint: During isothermal expansion, both pressure $p$ and volume $V$ change along an isotherm with a constant $pV$ product. The work $W$ done by a gas is defined as $W={\int }_{V_1}^{V_2}p\mathrm{d}V$.