The equation of state of a gas is given as = Ru T, where the units of  and P are m3/kmol a...

The equation of state of a gas is given as = Ru T, where the units of  and P are m3/kmol and kPa, respectively. Now 0.2 kmol of this gas is expanded in a quasi-equilibrium manner from 2 to 4 m3 at a constant temperature of 350 K. Determine (a) the unit of the quantity 10 in the equation and (b) the work done during this isothermal expansion process.