Gas Law

The experiment showed that a can within a full of water was heated. After several minutes during the water boiling...

The water jumped to the can, and can condensed .The water was room temperature about 20 degree C before heating. During the water boiling, the water arrived at 100 degree C, so the inside of the can and outside of the can had temperature difference.According to an ideal gas law formula, P*V=n*R*T,the can inside became higher, so the pressure of inside can is also became higher. During the pressure of inside can extra high, the water would jump to the can. At this time, the pressure of outside was higher than pressure of inside the can, so the can would condense.

This experiment showed how the temperature affected the volume occupied by a trapped gas maintained at a constant pressure. In this experiment,we should have three different temperature water which were hot water,cold water,and room temperature water. To prevent spills, put the flask in the mug on the tray, the tubing in the rubber stopper hole, and the thermometer in the mug outside the flask. When we put the flask into the water with room temperature,the plunger did not remove. Since we would be cold water with the ice to reduce the volume of the trapped air, pull the plunger out. When we brought the flask back to the water with room temperature, the plunger return the original positive. When we put the flask to the hot water, the plunger reduce the original positive. When we brought the flask back the water with room temperature, the plunger came back to the original positive again.

This Picture showed the data and graph between the temperature and volume.

This picture showed that the relationship between the volume and temperature, the relationship between the pressure and temperature, the relationship between the pressure and volume, and the relationship with pressure,volume,and temperature. The Idea Gas Law is defined as one in which all collisions between atoms or molecules are perfectly eleastic and in which there are no inter-molecular attractive forces. One can visualize it as a collection of perfectly hard spheres which collide but which otherwise do not interact with each other. In a gas, all the internal energy is in the form of kinetic energy and an change in the     internal energy is accompanied by change in temperature.

                           

The first picture showed when the pressure of inside was decrease, the balloon became large. The second picture showed when the pressure of inside was increase, the marshmallow became small.They followed the Idea Gas Law.

This experiment showed a cylinder with a low- friction movable plunger to small flask, and there was a flask in hot water. 

When we held the plunger to keep the gas constant,the gas should keep hot. After a minute, we release the plunger and let it move freely, we know that the plunger jumped out at the end of lab.