What is the number “4” in SiCl4? a subscript a coefficient a product a reactant

On a distance vs time graph the line of an object at rest is a

C3h8o3 - glycerol major species present when dissolved in water

Ill give brainiestif one neutron initiates a fission event that produces two neutrons in the products, how many new reactions can now be initiated? if each of the neutrons produced in the first fission event then initiates a fission event that produces one neutron in the products, how many new reactions can now be initiated by each neutron? how many neutrons in total were produced by the two fission events described?