Will the metal dissolve?

You will write functions that predict whether a metal dissolves in a solution of another metal's ions. You will also pick out the metals that release hydrogen from acid, and work out the free energy change of a reaction.

The idea. A reaction happens if $E^\circ = E^\circ(\text{reduced}) - E^\circ(\text{oxidised})$ is positive. $\Delta G^\circ = -nFE^\circ$.

Your tasks.

1. Complete displaces(metal, ion_of) so that it returns True when the strip of metal dissolves in a solution of the ions of ion_of.
2. Set acid_metals to the list of metals that release hydrogen from dilute acid, in the order of the table.
3. Complete delta_g(e_cell, n) so that it returns $\Delta G^\circ$ in kJ/mol.