2.4x10^24/6.022x10^23= 4.00
The rapid motion and collisions of molecules with the walls of the container causes pressure.
The energy conversion happening here is known as photosynthesis. Photosynthesis is a process where the leaves of a plant absorb water and carbon dioxide, then, using light energy from the sun, convert that into oxygen and sugar.
It splits into two equal nuclei of approx. equal mass.