1. One mole of an ideal gas at 10 atm pressure is contained in a vessel at 300K. The is expanded till the pressure becomes 2 atm and the temperature reaches 400K. Calculate the work done on the system...

this is the last part hoo! Yeaayy!!..  Kindly answer PART C. Thank you soo much and i really appreciate it :)

Extracted text: 1. One mole of an ideal gas at 10 atm pressure is contained in a vessel at 300K. The is expanded till the pressure becomes 2 atm and the temperature reaches 400K. Calculate the work done on the system and the heat absorbed by it if the change is brought about by the following processes: gas A] The gas is expanded isothermally against a constant external pressure of 2 atm, then heated to the desired temperature at constant volume, and finally expanded till the final state is reached. B] The again expanded reversibly till the final state is reached. gas is expanded by an isothermal reversible process, then heated to 400K, and C] The gas is first heated in an isochoric process and then expanded reversibly in an isothermal process.