$1$st and $2$nd thermodynamics problem.

i am trying to fully describe this proposed system. note that the A is an adiabatic compression of $2$ to $3$ making the temperature at $3=500$K$.$ C is an adiabatic expansion of $2$ to $5$ making the temperature ar $5=111$K$.$ B is an isothermal expansion of $3$ to $4,$ making the pressure at $4$ equal $1\mathrm{.}01$ bar. D is an isothermal compression of $5$ to $6,$ making the pressure at $6$ equal $1\mathrm{.}01$ bar. i have worked out the relationship between A and C$,$ finding the work required to be $256\mathrm{.}49$ W$.$ I am struggling to find the Work$/$heat relationships for the isothermal compressor$/$turbine$.$ More information, heat capacity is independent of temp$/$pres for this problem and is constant. Additionally the molar flow rate of $2=162$ mol$/$hr$.$ also this problem is at steady state operation. please help using energy balances and entropy balance if necessary. assume they are reversible so delta S $=0.$