 We will do an experiment to measure the vapor pressure of methanol at different temperatures. We have connected a pressure sensor to our CBL and the CBL to the calculator. I've already loaded and started the ChemBio program and set the ChemBio program to measure the pressure every three seconds for 40 samples. I'm going to fill the dropper with some liquid methanol. Once the pipette is filled, I'm going to put a small amount of parafilm over the end of the pipette tip to keep the liquid from leaking out of the pipette. I'm going to now attach the pipette to my bottle. I'm going to start the calculator and CBL and record a few pressure values to establish the initial pressure in the bottle. We've collected a few pressure points to establish the initial pressure. It's close to one atmosphere. We'll then squeeze the bulb and inject all the methanol. We'll swirl this a little bit to help the methanol to evaporate. The pressure probe is reading the pressure and reading the increase in pressure due to the evaporation of the methanol. Eventually, an equilibrium is reached between the methanol liquid and the methanol vapor and the pressure will level off. The difference between the initial pressure and the final pressure gives the vapor pressure of the liquid methanol at this temperature. We'll repeat the experiment at different temperatures. We'll record the initial pressure, the final pressure, and the change in pressure.