An insulated cylinder is initially divided into halves by a frictionless, thermally conducting piston. On one side of the piston is 5 ft^3 of a gas at 5000R and 2 atm. On the other side is 5 ft^3 of the same gas at 5000R and 1 atm. The piston is released and equilibrium is attained, with the piston experiencing no change of state. Employing the ideal gas model for the gas, determine the final temperature, in R, the final pressure, in atm, and the amount of entropy produced, in Btu/R.