A cylinder and piston assembly contains water at 105C and 85% quality, with a volume of one liter. The system heats up, causing the piston to rise and encounter a linear spring. At this point the volume is 1.5 liters, the piston diameter is 150 mm, and the spring constant is 100 N/mm. Heating continues, so the piston compresses the spring. Determine the pressure in the cylinder when the temperature reaches 600C.