A 10-m high cylinder, cross-sectional area 0.1 m2, has a mass less piston at the bottom with

Question:

A 10-m high cylinder, cross-sectional area 0.1 m2, has a mass less piston at the bottom with water at 20oC on top of it. Air at 300 K, volume 0.3 m3, under the piston is heated so that the piston moves up, spilling the water out over the side. Find the total heat transfer to the air when all the water has been pushed out.