An insulated tank that contains 1 kg of O2 at 15oC and 300 kPa is connected to a 2-m3 uninsulated tank that contains N2 at 50oC and 500 kPa. The valve connecting the two tanks is opened, and the two gases form a homogeneous mixture at 25oC. Determine
(a) The final pressure in the tank.
(b) The heat transfer.
(c) The entropy generated during this process. Assume T0 = 25oC.

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02 1 kg 15°С 300 kPa N2 2 m 50°C 500 kPa