Your other hand must keep the cylinder to avoid it from falling. The tip of the eyedropper need to be resting towards the interior surface area from the cylinder and slightly below the area of the solvent layer. This is why the Arrhenius definition doesn’t delay for the Brønsted-Lowry definition. https://copyright-shop53949.answerblogs.com/36586066/helping-the-others-realize-the-advantages-of-buy-5-meo-copyright-usa