A 4-kg mass at the Earth's surface weighs about Newtons.

Mass(m) = 4kg. Weight of m on surface of earth = 39.2N

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Your answer is

Mass(m) = 4kg. Weight of m on surface of earth = 39.2N

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Explanation:

~Zayn

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.