Intro to Gas Laws with Heat (Update)

In the begining of this class we were introduced to the equation PV=nRT. This class went over all the basics with pressure, volume, and temperature. We also talked a little about constants that people have discovored to be true about ideal gass at particular temperature levels.

 

 

 

 

 

 From there we started with a flask will regular air in it. Mason, you, prepared three baths of water. One with ice, one that was heated, and one that was straight from the tap. He connect the flask with a tube that was also connected to a friction-less syring from Italy. The little demo started with the flask in the room temp water with the syring in the middle of its own tube.

 

 

 

 In this picture Mason is pointing at the syring's new level after placing the flask in cold water. Is finger is pointing at that bottome of the syring because the molecues inside the the flasked slowed down and stopped applying as much pressure to the flash as it was previously.

 

 

 

Now he placed the flask in the water that was on the hot plate. The syring raised higher up its tube because the molecus started moving faster and applying more pressure to the bottome of the syring. We could say that it had more less and more energy repectivly but we have not aproached that section of the class yet. We will stick to explainations that has to do with pressure, volume, and temperature.

 

 

 

After doing the demo we were given some parameters from the data that was collected. With that data were had to derive a equations that would represent all variables. This was a picture of the begining of the equation. The actual equation had to do with P,V, and T. We did not get it in the end so i could not take a picture of the actuall equation.

 

 

This was teh end result of a problem that was given my you, Mason, in class. It was confusing at first but in the end I had a better understanding of what we were doing. The homework had something like this also so I should suspect something like this to be on the test. Or should I say celebration of knowledge. I wonder how long have you been useing that line?

 

 

 

 



 

In the above two images we see a ballon and a marshmallows inside a sealed contraption. We had to predict what would happen in the atmosphere started to vent out of it. My prediction was half right because I knew that objects would expand but i did not know that it would shrink to a smaller state after we brought the pressure back to normal. It was a drastic change and i would have recoreded it but you know how crouded it is when you do a demo.

(I had a movie avaliable but it wont upload in a reasonable time.)

 

 

This little contraption here was the pressure sensosr that we used in our experiment. We attacted a syring to the pressure sensor and configured the LoggerPro program to take data only when we wanted it to so we could see the pressure for every incrument of change if the syring's height of the plunger. In conclusion to this lab we say that the relationship between pressure and volume was not linear but in fact a type of  logerithmic.