You would need 1000 liters
Its okay my friend. you dont need to over stress it.
Explanation:
atom changes from a ground state to an excited state by taking on energy from its surroundings in a process called absorption. The electron absorbs the energy and jumps to a higher energy level. In the reverse process, emission, the electron returns to the ground state by releasing the extra energy it absorbed
The correct answer is C) There are more particle collision
With more particle collision, more reactions are created.