i think this is right but i'm not sure exactly what you're looking for
The rate of diffusion of a gas is inversely proportional to the square root of its molecular weight.
shape, molecular weight. I don't know for sure though
O2, N2, Ar, H2O vapor
the calvin cycle has three stages. in stage 1, the enzyme rubisco incorporates carbon dioxide into an organic molecule. in stage 2, the organic molecule is reduced. in stage 3, rubp, the molecule that starts the cycle, is regenerated so that the cycle can continue