Flask x contains 5dm3 of helium at 12kpa pressure and flask y contains 10dm3 of neon at 6kpa pressure. If the flasks are connected at constant temperature, what is the final pressure?
Answers
Answered by
91
Answer:
*=*
The final volume=15L
The partial pressure of the helium decreases to
The partial pressure of the Neon to
Then the final pressure will be the sum of the two partial pressures=8kPa
Answered by
21
Answer:8kPa
Explanation:
To answer this question we must know the formula P1*V1=P2*V2.
Rearrange the formula to find the final pressure. The total volume is 15 dm3, P1*V1/15.
Partial pressure of Helium: 12*5/15 = 4kPa
Partial pressure of Neon: 10*6/15 = 4kPa
Add both of them 4+4=8 .
Therefore 8kPa is the combined pressure at constant temperature.
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