Arigid tank of 1.1 m3 is divided into two equal compartments by a partition. one compartment contains o2 at 300 k and 100 kpa, and the other compartment contains n2 at 350 k and 200 kpa. now the partition is removed, and the two gases are allowed to mix. the heat gain from the surrounding air at 400 k during this process is 50 kj. determine (a) final mixture temperature, in k, (b) final mixture pressure, in pa, and (c) total entropy production, in kj/k. (cv, o2