12. Consider the following processes: 1/2 A - B 3B - 20 E + A-D AH= 150 kJ/mol AH= -125 kJ/mol AH= 350 kJ/mol Calculate AHfor: B + D - E + 2C * (2.5 Points) -325 kJ/mol 525 kJ/mol 0-175 kJ/mol 325 kJ/mol