This element has an oxidation number of -3 and it has 16 neutrons. What element is this room made of

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

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?

In which reaction is precipitation occurring?