D + D → ³He + n + E
or
²H + ²H → ³He + n + E
D=²H
The answer is 62.026 g/mole
True because if anything is moving it is in motion. And because horizontal is similar to projectile!
The average Kenectic energy
I believe you just look at your periodic table for this value. I don't think there is any math involved.
Therefore one mole of Mg = 24.305g.