An ideal gas, Cp = (7/2)R, is heated in a steady-flow heat exchanger from 343.15 K
to 463.15 K (70°C to 190°C) by another stream of the same ideal gas which enters at
593.15 K (320°C). The flow rates of the two streams are the same, and heat losses from
the exchanger are negligible.
(a) Calculate the molar entropy changes of the two gas streams in the exchanger.