Determine the specific volume of steam at 4 mpa and 400°c based on (a) the exact value given in the property tables, (b) the ideal gas equation, and (c) the generalized compressibility chart. determine the error involved in (b) and (c).

An electrical kettle is made out of stainless steel,weighs two pounds (when empty) with a heating element that consumes 2 kw of electricity. assuming that the water and the kettle are at the same uniform temperature at any moment of time, calculate the shortest possible time to bring 2 quarts of water from room temperature to the onset of boiling.