Which formula represents an unsaturated hydrocarbon?

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.

metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;

if the temperature drops and becomes cool

then the atmosphere can be freezing as the water vapor in the air is at maximum (100%) and can be severely cold

also can be snowing lightly as the moisture in the air will start to solidify

and btw this is not chemistry but