Respuesta :
coefficients give the number of atoms involved in a reaction. Second: the coefficients give the number of moles of each substance involved in the reaction.
Explanation:
Coefficients are the number present in front of an atom or molecule in a chemical reaction.
For example, [tex]2Na + Cl_{2} \rightarrow 2NaCl[/tex]
In this reaction 2 in front of Na in reactant side shows 2 moles of sodium atoms are participating. Whereas 2 in front of NaCl in product side shows that 2 moles of sodium chloride is formed.
Therefore, we can conclude that coefficients in a balanced chemical equation tell you the moles of each substance involved in the reaction.