Answer:
Large number in front of the molecue's chemical formula
Explanation:
The number of molecules of a given substance in a chemical reaction is indicated by numerical coefficients.
The stoichiometry of a reaction is the mole ratio in which reactant molecules react to form products.
The moles of each substance in the reaction is indicated by numerical coefficients placed in front of the substance.
Where there are no numerical coefficients, the moles of that substance is 1.
Therefore, numerical coefficients placed in front of the substance indicates the amount in moles of a given substance.
Learn more about moles of a substance at: https://brainly.com/question/1427235
