A stream of water vapor flowing at 2.28 kg/s enters a process at 148.4C and 1 atm and takes on 508.4 kW of heat at constant pressure before leaving the process. Take the heat capacity of water vapor to be represented well by the polynomial expression

[kJ/(molK)]=33.46x10^(3)+0.6880x10^(5)+0.7604x10^(8)23.593x10^(12)3

What is the exit temperature?