Lab: Boyle's Law Assignment: Reflect on the Lab

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.

2.13 kg/cm²

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

51.5

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.

A. As the pressure of the gas increased, the volume of the gas decreased. B. For all pairs of data of pressure and volume, P • V was appoximately the same. C. For all pairs of data of pressure and volume, P • V mr001-1.jpg k for the same value k. D. The regression equation was of the form V = kP-1 (which is the same as V = k/P).

Check all reasons why a book was used.

A. It increased pressure on the gas. B. It supported additional weights.

Check all actions that change the constant k.

A. Leaking air from the syringe B. Changing the number of gas molecules C. Changing the temperature

Since P • V was the same for all pressures, this student's data was

Accurate

Justify your answer.

As weight was added to the top of a syringe, the volume of the air trapped in the syringe decreased. The weight and the surface area of the plunger were used to calculate pressure. As more weight was added, the pressure increased. The volume decreased in response.

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.

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

Based on____________law, pressure and volume were expected to be inversely proportional.

Boyle's

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

Check all of them.

Did you mention that volume decreased as the pressure increased?

No

To answer this question, you used weight to change the________of the gas and measured the resulting changes to the gas's_____________.

Pressure Volume

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?

Sorry it won't let me copy the answer.

The amount of gas (in terms of moles, mass, and molecules)______________.

Was constant

Did the data support the hypothesis (above)?

Yes

Did you mention that adding weight increased the pressure?

Yes

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

Yes