Thermal Physics Flashcards
1
Q
How do you calculate the number of molecules in a substance?
A
N = n (number of moles) x Na (Avagadro constant)
2
Q
What are three assumptions made in the kinetic theory of gases?
A
- Collisions are perfectly elastic
- Time of collision is negligible compared to time between collisions
- Large number of molecules in random motion
3
Q
What is Brownian motion?
A
Smoke particles show random motion this is because of collisions with air molecules
