4 original questions from New Regents. The worksheet, answer key, and browser practice are free.
Comparing Two Paths to One Gas State 4 questions
Comparing Two Paths to One Gas State
Base your answers on the information provided and your knowledge of chemistry. Use the 2025 Chemistry Reference Tables as needed.
A sealed model gas starts at 100 kPa, 4.0 L, and 300 K. The amount of gas stays fixed. The model keeps pressure times volume divided by absolute temperature constant. Two paths reach a final volume of 2.0 L and a final temperature of 360 K.
| Path | First operation | Second operation |
|---|---|---|
| P | Compress to 2.0 L at 300 K | Warm to 360 K at 2.0 L |
| Q | Warm to 360 K at 100 kPa | Compress to 2.0 L at 360 K |
Question 1
Which first operation keeps pressure constant?
- P only
- Q only
- Both
- Neither
Question 2
Calculate the pressure after P’s first operation and the volume after Q’s first operation.
Write your answer and work on the printable worksheet, or answer online.
Question 3
A student uses the different intermediate states to argue that the final pressures must differ. Select whether the model supports or refutes the claim. Calculate the final pressures as evidence.
Write your answer and work on the printable worksheet, or answer online.
A repeated Q trial reaches 2.0 L and 360 K, but it reports only 216 kPa. The instruments are correct, and the model still relates pressure to gas amount at the final volume and temperature.
Question 4
Calculate what fraction of the starting gas remains in the repeated trial.
Write your answer and work on the printable worksheet, or answer online.
2025 Chemistry Reference Tables · Browse Chemistry worksheets