Background: The purpose of this lab was to use parts of the combined gas law formula to understand the relationship between unknown variables. We were able to obtain two unknown variables by holding two different variables constant. For this experiment the variables we measured were pressure (P), volume (V), temperature (T), and amount of substance (n). To achieve our answers we used the combined gas law which is derived from Boyle’s, Charles, and Gay-Lussac’s gas laws. In this experiment we also relied heavily on rigid and non-riged containers and well as an open and closed system. All our points were also graphed to help identify whether the relationships were inversely or directly related.
Hypothesis: If two variables are being compared and the combined gas law is being used then there must be two variables that are held constant during the experiment. If the relationship between two variables can be identified, and two known variables are held constant, then one can identify the gas law used.
Materials:
Pressure sensor probe
Flask
Distilled water (Hot, Cold, and Ice)
Syringe
Rubber tubing stopper Ring stand
Beaker
Manometer
Arm clamp
Small neck flask
Temperature probe
Procedures:
Day1:
1. We started by setting up the pressure probe and plugging the sensor into channel one.
2. Next we inserted the syringe into the pressure senor.
3. Pointing the syringe up we pushed it to 8mL and recorded it.
4. Following the same procedures we recorded the pressure at 10mL, 12mL, 14mL, and 16mL
Day2:
1. This portion was on the computer.
2. The only thing I did was input different temperature and record the data it gave me.
Day3:
1. We started by setting up the ring stand and attaching the flask to it.
2. We then put a stopper in...
... middle of paper ...
...e reading from the pressure sensor was not changing dramatically.
The main idea that I got out of this lab is that the study of gas law’s is more important than it may seems. For example Charles’s law can be used in life applications. His law explains why you should not over inflate a raft on a sunny day. If you were in a life or death situation and had a raft, you would know not to overinflate it, because if the sun heats it up, it could pop. Another example can be used when determining the pressure of your tires. If you take the pressure when the temperature is hot, the pressure will be higher. But if you take it at a colder temperature the pressure will be lower. This is helpful when your car tires need more air. This is proved through Gay-Lussac’s law. Gas laws are part of our everyday lives, and although they go unnoticed, they are a huge part of our lives.
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