100 POINTS

Please I need this page done lol

Can you guys me with question no. 5!

What mass of carbon dioxide is produced from the complete combustion of 4.50×10−3 g of methane?

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?