1 kg of steam contained in a horizontal frictionless piston and cylinder is heated at constant pressure of 1.013 bar from 125 degrees to such as temperature that its volume doubles. Calculate the amount of heat must be added to accomplish this change, the final temperature of steam, the work does against its surroundings, and the internal energy and enthalpy changes of the steam for this process. Assuming that the steam is an ideal gas with a constant-pressure heat capacity 34.4J/mol K