2) A system suffers an increase in internal energy of 80 J and at the same time has 50 J of work done on it. What is the heat change of the system? a) +130 Jb) -30 Jc) +30 J d) -130J e) 0J 3) For the reaction A+B-→C AH0 = +30 kJ AS0 = +50 J/K. Therefore the reaction is: a) spontaneous at all temperatures b) nonspontaneous at all temperatures c) spontaneous at temperatures greater than 600 K d) spontaneous at temperatures less than 600 K. e) spontaneous only at 25 c
