The purpose of this experiment was to study the relationship between the pressure and volume of a gas at constant temperature, as well as the pressure and temperature of a gas at constant volume.  In the first experiment dealing with Boyle's law, a syringe was connected to the pressure sensor and the pressure changes that occurred were monitored as the volume decreased.  To experiment with Guy-Lussac's Law, pressure was monitored as the temperature was increased.  The experiments showed that as volume decreases, pressure increases, and as temperature increases pressure also increases. Possible sources of error may have been leaving the hot plate on too long at a high level of heat which increased the pressure more than the rubber stopper in the pressure and temperature sensor could handle. This caused a sudden decrease in the pressure on the graphed data when the rubber stopper popped off towards reaching 80 degrees celsius, therefore causing a flaw in the curve.