Effusion is the escape of gas molecules through a very small hole in a membrane into an evacuated area; diffusion is the spreading of molecules of a substance throughout a space or second substance.
The answer would be activation energy
It is alkaline ........I need 20 characters......
Answer:
Inside the bar magnet, the B is actually stronger at the centre (like in the case of a solenoid). Outside the bar magnet, B is small near the centre since there are very less open field lines there. ... A magnet has attracted iron pieces for many times your welcome XD
Explanation:
