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Reading a Gas Mixture After a Small Leak 4 questions
Reading a Gas Mixture After a Small Leak
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A rigid chamber holds two gases at one temperature. P particles are lighter than Q particles and move faster on average in the model. A tiny opening lets particles escape into an evacuated collector. No gas returns during the observation. The faster species loses a larger fraction of its particles over the observation, and the chamber temperature is unchanged.
| Gas | Particle count before the leak | Particle count after the leak |
|---|---|---|
| P | 40 | 20 |
| Q | 40 | 30 |
Question 1
Which gas loses the greater fraction of its original particles?
- P only
- Q only
- Both lose the same fraction.
- The starting counts cannot be compared.
Question 2
Calculate the fraction of the remaining gas particles that are Q. Compare it with the starting fraction.
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Question 3
A student says Q’s greater fraction means more Q particles entered the chamber. Evaluate the claim using the counts.
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At the stated temperature and volume, the pressure is proportional to the total particle count. The starting pressure is 80 kPa.
Question 4
Find the final pressure and explain why the composition change alone does not give that pressure.
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