Calculate: To find the total energy emitted in the proton-proton chain, you have to consider the fact that two He-3 atoms must be created to form the final He-4 atom. Write the energy produced in each step, and then find the sum of all of these energies using the table below.

A.
How much energy is required to make one He-3? (See questions 2 and 3).



B.
How much energy is released when making TWO He-3 atoms? (Question A gives energy for one atom).


C.
How much energy is released to make one He-4 from two He-3 atoms (See 4A)?


D.
What is the total energy of the proton-proton chain reaction – first creating the two He-3 and then the He-4? (See 5B and 5C).