Finding the van’t Hoff factor

You will write functions for the van’t Hoff factor. One finds $i$ from a measured and a calculated effect. One finds the degree of dissociation of a salt. One finds the osmotic pressure when $i$ is not $1$.

The idea. $i = \dfrac{\text{observed}}{\text{calculated}}$, and for a salt that gives $\nu$ ions, $i = 1 + \alpha(\nu - 1)$. The osmotic pressure is $\pi = i\,C\,R\,T$.

Your tasks.

1. Complete factor(observed, calculated) so that it returns $i$.
2. Complete alpha_split(i, ions) so that it returns the degree of dissociation, as a fraction.
3. Complete osmotic(c, t, i) so that it returns the osmotic pressure in atm. The concentration is in mol/L and the temperature is in kelvin.