Two moles of a monotonic ideal gas are a piston-cylinder arrangement at 50C. The gas volume is 100 cm3. The gas is heated to 80C and expands against constant atmospheric pressure ( 1bar) to 150cm3. a. Calculate the work done during this process in Joules. Is the work done by the gas or on the gas? b. Calculate the change in internal energy for this system in Joules. c. Calculate the amount of heat that was added to this system in Joules