A mass of 5 kg of saturated liquid-vapor mixture of water is contained in a pistoncylinder device at 100 kPa. Initially,

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A mass of 5 kg of saturated liquid-vapor mixture of water is
contained in a pistoncylinder device at 100 kPa. Initially, 2 kg of
the water is in the liquid phase and the rest is in the vapor
phase. Heat is now transferred to the water, and the piston, which
is resting on a set of stops, starts moving when the pressure
inside reaches 200 kPa. Heat transfer continues until the total
volume increases by 30 percent. Determine
a) the initial and final temperatures,
b) the mass of liquid water when the piston first starts
moving,
c) the work done during this process.