Q2-Q4 concern the following scenario: A 2.50 g sample of copper (C_s copper = 0.385 J/(g C)) that had been heated to 200. C was placed in a flexible container with an initial volume of 1.5 L and an initial temperature of 25 C that was filled with air at a pressure of 1.0 atm. Assume that air acts as an ideal linear gas and no heat energy enters or exits the container.

During thermal equilibration, what is the change in entropy of the air due to the change in volume?(If needed, use the integer value of the temperature at thermal equilibrium.(your answer to Q2.))

Enter the S in J/K. Include a sign but not units.(Round to one significant figure.) (IMPORTANT do NOT leave a space between the "+" or "-" sign and the numeric value.