Entropy generation for the process, Chemistry

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Two kg Ammonia (mA) at  PA = 300  kPa and TA = -10ºC and 1 kg Ammonia (mB) at PB = 300 kPa and TB = 100ºC  are mixed in a constant pressure and adiabatic process. Find the following:
 
a) Final temperature, T2 [ºC] 
b) Final volume, V2 [m3]
c) Entropy generation for the process,  Sgen [J/kg].


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