How soluble was solid #4? If a solid appears in the water after 1 g is added, the solid is not soluble. If the entire solid dissolves after adding 5 g, the solid is very soluble. If a solid appears somewhere between 1 g and 5 g, the solid is slightly soluble.

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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.

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