Energy at an electrochemical condition, compatible with
        numpy arrays for pH/V input

        Args:
            pH (float): pH at condition
            V (float): applied potential at condition

        Returns:
            energy normalized by number of non-O/H atoms at condition

def normalized_energy_at_conditions(self, pH, V):
        """
        Energy at an electrochemical condition, compatible with
        numpy arrays for pH/V input

        Args:
            pH (float): pH at condition
            V (float): applied potential at condition

        Returns:
            energy normalized by number of non-O/H atoms at condition
        """
        return self.energy_at_conditions(pH, V) * self.normalization_factor