1. The problem statement, all variables and given/known data "A steel cylinder of mass 2 kg contains 4.0 L of liquid water at 25 degrees centigrade at 200 kPa. Find the total mass and volume of the system." 2. Relevant equations I know that water at 4 degrees centigrade is approximately 1000 kg/m^3. But how about when it is pressurized and at 25 degrees centigrade? 3. The attempt at a solution I don't know where to start with this one. Thanks for any help.