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...

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
= 348 K and P₁
= 1 atm. An electrical heating element in Section A is activated, and the air temperatures slowly increase: T_A
in Section A because of heat transfer, and T_B
in Section B because of adiabatic compression by the slowly moving piston. Treat air as an ideal gas with Cp = 7/2 R, and let n_A
be the number of moles of air in Section A. For the process as described, evaluate one of the following sets of quantities:

T_A, T_B, and Q/n_A, if P(final) = 1.75 atm.

T_B, Q/n_A, and P(final), if T_A
= 465 K.

T_A, Q/n_A, and P(final), if T_B
= 345 K.

T_A, T_B, and P(final), if Q/n_A
= 5 kJ mol^-1.