From delta G standard to K and back

You will write two functions that turn a standard Gibbs energy change into an equilibrium constant and back again, and use them on a short list of reactions at $298\ \text{K}$.

The idea. $\log K = -\Delta G^\circ / (2.303\,RT)$, with $\Delta G^\circ$ in J/mol, and $\Delta G^\circ = -2.303\,RT\log K$. Going there and back must give the number you started with.

Your tasks.

1. Complete k_from_dg(dg, t): dg is in kJ/mol; return $K$.
2. Complete dg_from_k(k, t): return $\Delta G^\circ$ in kJ/mol.
3. Set favoured to the list of the names whose $K$ at $298\ \text{K}$ is more than $1$, in the order of the dictionary.