MENTOR NOTE: NO TEMPLATE BECAUSE SUMITTED TO WRONG FORUM. 3.1) A quantity of 0.10 mol of an ideal gas A initially at 22.2 degrees C is expanded from 0.200 dm3 to 2.42 dm3 . Calculate the values of work (w), heat (q), internal energy change (delta U), entropy change of the system (deltaSsys), entropy change of the surroundings (deltaSsurr), and total entropy change (delta S univ) if the process is carried out isothermally and irreversibly against an external pressure of 1.00 atm. The question is how do I calculate entropy? I tried something, and this is what I got: delta S system=2,0728 JK-1 delta S surroundings=0.76 JK-1 delta S universe=2,8328 JK-1 Can you please check this out?