Boyle's Law Explained: How Temperature and Pressure Affect Volume

In summary, the can was turned upside down so that air would not get into the can really fast. This prevented it from increasing the decrease in the air volume inside the can.
  • #1
kandyce
1
0
hey i need help with this 1 i did the experiment but this last problem is killing me

Analysis
Hint: As you are thinking about this we want you to know that the water in the can and in the pan is only there to heat or cool the air in the can. In 5.07 you studied the relationships of temperature and pressure as it affects volume. Use this knowledge in explaining your results. Also, don't forget about atmospheric pressure!
Before you begin the analysis think about what was actually happening to the gases inside versus outside the can. Think in terms of where the pressure is greatest, versus less.
1. What happened when you put the can in the water?
The can imploded and made a “popping” noise.


2. Why did this happen?
This happened because when the temperature in the can decreased, the volume in the can decreased as well. This made the pressure inside the can decrease. The result was the pressure inside the can was lower than the pressure outside of it. The atmospheric pressure made the can implode and pushed the sides of the can together.


3. Why did you have to turn the can upside down?
I think the can was turned upside down so that air would not get into the can really fast. This prevents it from increasing the decrease in the air volume inside the can.


4. What gas law would account for what happened?
The law that would account for what happened would be Boyle's Law.


5. Explain how your choice of this gas law is supported by your observations.



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  • #2
kandyce said:
This happened because when the temperature in the can decreased, the volume in the can decreased as well. This made the pressure inside the can decrease. The result was the pressure inside the can was lower than the pressure outside of it.

The pressure of WHAT? The volume of WHAT? You have the right idea, however.
3. Why did you have to turn the can upside down?
I think the can was turned upside down so that air would not get into the can really fast. This prevents it from increasing the decrease in the air volume inside the can.

This is very confusing.

4. What gas law would account for what happened?
The law that would account for what happened would be Boyle's Law.

Kind of, but Boyle's law only gives the relationship between pressure and volume. It doesn't say that pressure decreases when temperature does for constant volume or volume decreases when temperature does for constant pressure.
 
  • #3
You have not described the experiment, so we have to guess parts of it, but

kandyce said:
3. Why did you have to turn the can upside down?
I think the can was turned upside down so that air would not get into the can really fast. This prevents it from increasing the decrease in the air volume inside the can.

What happens to the hot air?

--
methods
 

1. What is Boyle's Law?

Boyle's Law is a gas law that states the inverse relationship between the pressure and volume of a gas, when temperature is held constant. It was first discovered by scientist Robert Boyle in the 17th century.

2. How does temperature affect Boyle's Law?

According to Boyle's Law, as the temperature of a gas increases, its volume also increases, assuming pressure remains constant. This is because the molecules of a gas move faster at higher temperatures, creating more collisions and increasing the volume of the gas.

3. How does pressure affect Boyle's Law?

Boyle's Law states that as the pressure of a gas increases, its volume decreases, as long as the temperature remains constant. This is because the gas molecules are forced closer together and take up less space, resulting in a decrease in volume.

4. What is the formula for Boyle's Law?

The mathematical formula for Boyle's Law is P1V1 = P2V2, where P1 and V1 are the initial pressure and volume, and P2 and V2 are the final pressure and volume. This formula can be rearranged to solve for any of the variables.

5. How is Boyle's Law used in real life?

Boyle's Law has many practical applications, such as in scuba diving, where changes in pressure affect the volume of air in a diver's tank. It is also used in the design of gas storage tanks, as well as in the production and packaging of various gases, such as propane and oxygen.

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