You enter a small cottage in the middle of the woods. You find a purple liquid in a pot. The cottage also has a lot of science equipment lying around, including a triple beam balance. Luckily, you also find an alchemist’s journal that she has used to record her experimental data. You find a graduated cylinder. It weighs 25 g. You pour in 20 mL’s of the liquid. You measure the mass of the filled cylinder, and discover that it now weighs 65 g. What is the density of the liquid?