(3). As shown in the figure, 5 kg of steam contained in à piston-cylinder assembly undergoes an expansion from State 1, where the specific internal energy is u₁ = 2709.9 kJ/kg, to State 2, where u₂ = 2659.6 kJ/kg. During the process, there is heat pw transfer to the steam with a magnitude of 80 kJ. Also, a Wp =-18.5 kJ paddle wheel transfers energy to the steam by work in the amount of 18.5 kJ. There is no significant change in the kinetic or potential energy of the steam. Determine the energy transfer by work from the steam to the piston during the process, in kJ. Is this work done to the system or by the system? (10 points) Q=+80 kJ 5 kg of steam u₁ = 2709.9 kJ/kg =2659.6 kJ/kg W Vpiston =?