Plz quick
which of these equations shows rust, fe2o3, forming when oxygen, o2, reacts with iron, fe?

2fe2o3 + 4fe → 3o2

4fe → 3o2 + 2fe2o3

3o2 + 4fe → 2fe2o3

2fe2o3 → 3o2 + 4fe

If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.

What is the independent variable in this investigation? mass volume sample number substance density

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?