Help!!! With part 2 & 3 Please

A stream of air at 450.0C and 835 torr with a dew point of 30.0C flowing at a rate of 1515L/s is to be cooled in a spray cooler. A fine mist of liquid water at 25.0C is sprayed into the hot air at a rate of 120.0g/s and evaporates completely. The cooled air emerges at 1atm. For the flow diagram below, use two material balances and three constraints to determine all unknowns except for the outlet temperature T3. X Check significant figures throughout calculation. You may have to perform a numerical solution. Make sure that you have used kg or moles consistently. Calculate the final temperature of the emerging air stream, assuming that the process is adiabatic. Sugsestion: Derive expressions for the enthalpies of dry air and water at the outlet air temperature, substitute them into the energy balance, and use an iterative or automated method to solve the resulting fourth-order polynomial equation. Outlet Temperature: Hint Assistance Used You may choose as a reference any state you wish. It is convenient to choose one of the streams as having reference conditions. You may have to perform a numerical solution. c) At what rate (a positive number) is heat transferred from the hot air feed stream in the spray cooler