Saturated, x=1%, water at 25C is contained in a hollow spherical aluminum vessel with inside diameter of

Question:

Saturated, x=1%, water at 25°C is contained in a hollow spherical aluminum vessel with inside diameter of 0.5 m and a 1-cm thick wall. The vessel is heated until the water inside is saturated vapor. Considering the vessel and water together as a control mass, calculate the heat transfer for the process.