A hot air ballon rises because? a. molecules become lighter when heated
b. molecules move faster and father apart when heated
c. molecules are less attracted by gravity when heated
d. molecules become charged and repel each other when heated ​

a

Explanation:

a. molecules become lighter when heated

solute : a solute is a substance that is dissolved in another substance is known as a solvent. it is mixed with a special mixture know as homogeneous mixture.

solvent: a solvent is a substance that dissolved a solute, which results in a solution is known as solvent.

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.