What is the temperature difference for ammonia in K

14-158 A soaked sponge is experiencing dry air flowing over its surface. The air is at 1atm and zero relative humidity. Determine the difference in the air temperature and the surface temperature of the sponge, TTs, when steady-state conditions are reached, if the sponge is soaked with (a) water, DAB=2.42105m2/s, and (b) ammonia, DAB=2.6105m2/s. Evaluate the properties of air, water, and ammonia at 20C,10C, and 40C, respectively