Very unsure on my answers for these 2 questions. i really have no idea what i'm doing. could someone explain? will give medal and maybe become a fan if someone would just me understand! ? 1. which of the following energy yields is likely to have come from a fission or fusion reaction? 1.0 × 10^2 kj/mol 2.5 × 10^2 kj/mol 1.2 × 10^3 kj/mol *this 1.4 × 10^11 kj/mol 2. in a nuclear reaction, a change in mass of 1.0 × 104 g occurs. what is the corresponding change in energy? use the formula e = mc2. 9.0 × 10^3 kj *my best 9.0 × 10^6 kj 9.0 × 10^9 kj 9.0 × 10^12 k