The 23rd-century starship Enterprise uses a substance called "di-lithium crystals" as its fuel. The mass of one 6Li atom = 6.015121 amu and the mass of the product of the fusion of two 6Li nuclei is exactly 12.
Assuming that "di-lithium" is very stable and the product of the fusion of two 6Li nuclei, the energy released per kilogram of di-lithium formed in the fusion process is closest to:
2.7180 ´ 109 kJ
1.5027 ´ 108 kJ
3.0055 ´ 106 kJ
2.2650 ´ 1011 kJ