- #1
sgstudent
- 739
- 3
Homework Statement
A syringe contains gas at the same pressure as the air outside. The piston moves freely along the cylinder without any friction. No gas escapes. As the syringe is heated from 20 degrees to 100 degrees the piston moves outwards. It stops moving when the temperature is steady. State how the value of each of the following quantities compares at 100 degrees, after the piston stops with its value at 20 degrees.
average distance - increased
pressure after it stops - same
average speed of gas - increased
frequency of collisions of the gas on the piston - same
Homework Equations
none
The Attempt at a Solution
i don't understand why the frequency of collision of the gas on the piston remains the same. Since at 100 degrees the pressure is the same as it was previously so shouldn't the frequency of collision be the smaller as average speed of gas increases, in order for the pressure to remain the same the frequency of collision must be smaller?
thanks for the help!