AnswersSY2026-27 - 2003340 Chemistry 1 Sem 2 CRLab: Boyle’s Law

Lab: Boyle’s Law Answers

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of the gas and measured the:pressure
Selection 2:volume.
2
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resulting changes to the gas’s pressure.volume.weight.

A
pressure.
B
volume.
C
weight.
3

The amount of gas (in terms of moles, mass, and molecules) decreasedwas constantfluctuated randomlyincreased

A
decreased
B
was constant
C
fluctuated randomly
D
increased
4

Based on Charles’sAvogadro’sBoyle’sHess’s law, pressure and volume were expected to be inversely proportional.

A
Charles’s
B
Avogadro’s
C
Boyle’s
D
Hess’s
5

To answer this question, you used weight to change the pressuresolubilitytemperature of the gas and measured the

A
pressure
B
solubility
C
temperature
6

Did the data support the hypothesis (above)? yessomewhatno

A
yes
B
somewhat
C
no
7

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 k for the same value k.
Option C
D
The regression equation was of the form V = kP–1 (which is the same as V = k/P).
8

A student doing this experiment obtained the data shown in the table above. The value of the constant, k, for this data is 0.0425.750.051.5

A
0.04
B
25.7
C
50.0
D
51.5
9

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

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

A
The air pressure in the ears increases.
B
The air pressure in the ears decreases.
C
The volume of air in the ears increases.
D
The volume of air in the ears decreases.
E
The change in volume causes discomfort.
F
It takes time for the ears to dispell excess air past the ear drum.
11

To answer this question, you used weight to change the ✔ pressuresolubilitytemperature of the gas and measured the

A
pressure
B
solubility
C
temperature
12

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

A
yes
B
somewhat
C
no
13

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 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).
14

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

A
0.04
B
25.7
C
50.0
D
51.5
15

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

A
It has volume markings that can be read.
B
It will not easily leak gas.
C
The volume can change.
16

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?

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.

17

Question text not available

Answer not available
18

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

A
inaccurate
B
random
C
accurate
19

Check all reasons why a book was used.

A
It increased pressure on the gas.
B
It supported additional weights.
C
It balanced the syringe.
20

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

A
yes
B
no
C
sort of

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