Calculate the following: How much energy is released by the conversion of 4.2 x 10" kg of mass to energy? How much mass must be converted to energy to produce 1.00 J of energy? 1.21 x 10 ^13 J; 4.2 x 10^12 kg 3.8 x 10^12 J; 1.11 x 10^-17 kg 4.2 x 10 ^12 J; 1.21 x 10^13 kg 1.12 x 10 ^12 J; 3.8 x 10^13 kg