3.26. A closed, nonconducting, horizontal cylinder is fitted with a nonconducting, frictionless, floating piston which divides the cylinder into Sections A and B. The two sections contain equal masses of air, initially at the same conditions, T1=300K and P1=1(atm). An electrical heating element in Section A is activated, and the air temperatures slowly increase: TA in Section A because of heat transfer, and TB in Section B because of adiabatic compression by the slowly moving piston. Treat air as an ideal gas with CP=27R, and let nA be the number of moles of air in Section A. For the process as described, evaluate one of the following sets of quantities: (a) TA,TB, and QA, if P (final )=1.25 (atm). (b) TB,QA, and P (final), if TA=425K. (c) TA,QA, and P (final), if TB=325K. (d) TA,TB, and P (final), if QA=3kJmol1