A $0\mathrm{.}3-m^3$ rigid vessel initially contains a saturated liquid$-$vapour mixture of water at

$150C.$ The water is now heated until it reaches the critical state. Determine the mass

of the liquid water and the volume occupied by the liquid at the initial state. What can

you conclude about the values of $v_f$ and $v_g$ at the critical state? Show this process on

a T$-$v diagram with respect to saturation lines.