A rigid tank contains an ideal gas at 40%u2070C that is being stirred by a paddle wheel. The paddle wheel does 200 kJ of work on the ideal gas. It is observed that the temperature of the ideal gas remains constant during this process as a result of heat transfer between the system and the surroundings at 25%u2070C. Determine the specific entropy change of the ideal gas and the entropy produced per unit mass during this process.