The fusion reaction that holds most promise for the generation of electricity is the fusion of tritium ³₁ H and deuterium ²₁ H. The following equation shows the process:

³₁ H + ²₁ H → ⁴₂ He + ¹₁ H

Calculate:

a. The change in mass in the reaction

b. The energy released in the reaction

c. The energy released if one mole of deuterium were reacted with one mole of tritium.
(Mass of ³₁ H = 3.015 500 u, mass of  ²₁ H = 2.013 553 u, mass of  ⁴₂ He = 4.001 50 u; mass of  ¹₁ H = 1.007 276 u.)