Finds stable entry at a pH,V condition
        Args:
            pH (float): pH to find stable entry
            V (float): V to find stable entry

        Returns:

def find_stable_entry(self, pH, V):
        """
        Finds stable entry at a pH,V condition
        Args:
            pH (float): pH to find stable entry
            V (float): V to find stable entry

        Returns:

        """
        energies_at_conditions = [e.normalized_energy_at_conditions(pH, V)
                                  for e in self.stable_entries]
        return self.stable_entries[np.argmin(energies_at_conditions)]