If the volume of a ping pong ball is approximately 100.0 cm ³, how many ping pong balls could you put in an empty science laboratory whose dimensions are 15.2 m, 8.2 m, 3.1 m?

answer; i believe that the correct answer is (a) potassium(k)

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.