 You will perform an experiment illustrating Boyle's law. Boyle's law is a relationship between volume and pressure at constant temperature and constant number of moles. To collect data, we'll use a CBL, a calculator-based laboratory interface connected to a graphing calculator. The CBL is connected to a pressure probe, which in turn is connected to a syringe. The system is at constant temperature because it's at the temperature of the surrounding air. It's at constant number of moles because there's a fixed amount of gas trapped in the syringe. As we apply pressure to the handle on the syringe, we will decrease the volume of the gas. As we increase the pressure on the gas, the pressure will be read by a pressure sensor. The pressure sensor sends a voltage signal to the CBL. The CBL acts as an analog to digital converter, which converts the voltage reading into a pressure reading. The pressure and the volume are graphed on the calculator.