Quiestion 4 Based on your experimental data, which metal was likely used to make pennies after 1982?

copper

Explanation:

i think it's copper because it's cheep and It exists in abundance

there is none because earth is stationary and flat.

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.