5) A sealed container contains both vapor and liquid water in equilibrium at 150 kPa . If the average internal energy of all the water in the container is 1,900 [kJ/kg], what fraction of the total...

Extracted text: 5) A sealed container contains both vapor and liquid water in equilibrium at 150 kPa . If the average internal energy of all the water in the container is 1,900 [kJ/kg], what fraction of the total mass is in the vapor phase? (Hint: Combine a material balance and an energy balance equation. Assume a basis for the total mass of water.)