When a massive particle collides with its corresponding antiparticle, they annihilate, producing photons with energy equal to their rest mass energy.
Imagine that you had of hydrogen and of anti-hydrogen. How much energy would you release if you let them collide? Express your answer as an order of magnitude. (That is, give when your answer is of the form joules.)
For comparison, the atomic bomb detonated over Nagasaki released .