A well insulated storage tank of 60m^3 contains 200 L of liquid water at 75digree. the rest of the tank contains steam in equilibrium with the water. spent process steam at 2 and 90 percent quality entered the storage tank until the pressure in the tank reaches 2 bar. assuming that the heat losses from the system to the tank and environment are negligible calculate the total amount of steam enters the tank during the filling process and the fraction of liquid after present at the end of the process ?