6. A gas with R = 278.6 J/kg-K and cv = .736 kJ/kg-K expands from XXXXXXXXXXatm and 561 K to 9.524 atm. Assume that throughout the process, the system is insulated. For 0.454 kg/s of this gas, prove...

6. A gas with R = 278.6 J/kg-K and cv = .736 kJ/kg-K expands from 14.972 atm and 561 K to 9.524 atm. Assume that throughout the process, the system is insulated. For 0.454 kg/s of this gas, prove that:
a. V2 = 0.06 m3/s
b. dS = 0
c. - dH = 1810 kJ/min