3. Calculate the work (in J) done on the system for each of the following examples (the system is given in italics). Specify the sign of the work. c. The volume of an ideal gas changes from 1.00L to 3.00L at an initial temperature of 25C and a constant pressure of 1 bar. d. The volume of an ideal gas changes from 1.00 L to 3.00L at an initial temperature of 25C and a constant pressure of 0.1Pa. e. The volume of an ideal gas changes from 1.00L to 3.00L at a constant temperature of 25C, and the expansion is done reversibly from an initial pressure of 1bar