Lab: Boyle’s Law

Question 1

Did the data support the hypothesis (above)? ✔ yessomewhatno

Revolt · Accepted Answer

✔ yes

Question 2

Justify your answer.

Revolt · Accepted Answer

if there is more room in the syringe then the molecules would have more space to move around in

Question 3

Suppose that the student took one more volume reading of 24.2 mL but forgot to measure the pressure. Compute the pressure expected for that volume. 1.221.47✔ 2.134.26 kg/cm²

Revolt · Accepted Answer

✔ 2.13

Question 4

Look back at your data and your regression equation. (Sample data is shown to the right, with x = pressure and y = volume.) Check all statements that are true.

Revolt · Accepted Answer

As the pressure of the gas increased, the volume of the gas decreased.; For all pairs of data of pressure and volume, P • V was appoximately the same.; For all pairs of data of pressure and volume, P • V k for the same value k.; The regression equation was of the form V = kP–1 (which is the same as V = k/P).

Question 5

A student doing this experiment obtained the data shown in the table above. The value of the constant, k, for this data is 0.0425.750.0✔ 51.5

Revolt · Accepted Answer

✔ 51.5

Question 6

Check all actions that change the constant k.

Revolt · Accepted Answer

leaking air from the syringe; changing the number of gas molecules; changing the temperature

Question 7

Check all reasons why a syringe was a good choice of tool in this experiment.

Revolt · Accepted Answer

It has volume markings that can be read.; It will not easily leak gas.; The volume can change.

Question 8

You are trying to make balloon sculptures. You twist the balloons gently, but they keep popping. Besides trimming your nails, how could you you prevent that? Why will your strategy work?

Revolt · Accepted Answer

To prevent the balloons from popping, you should not inflate them completely, leaving a small uninflated portion or "tail" at the end. This strategy works because of Boyle's Law, which states that pressure and volume are inversely proportional. When you twist the balloon, you decrease its volume, which causes the internal pressure to increase. By leaving uninflated space, the air has room to expand into that volume, keeping the pressure low enough so the balloon doesn't burst.

Question 9

Did you suggest filling the balloons with less air, thereby decreasing the pressure? yesnosort of

Revolt · Accepted Answer

yes

Question 10

Air pressure is lower at high altitudes. An airplane cabin can adjust, but as the plane rises, passengers can experience temporary pain in their ears. Check all facts below that explain why.

Revolt · Accepted Answer

The air pressure in the ears decreases.; The volume of air in the ears increases.; The change in volume causes discomfort.; It takes time for the ears to dispell excess air past the ear drum.

Lab: Boyle’s Law Answers

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