The stoichiometric coefficients in a balanced chemical equation tell you how many atoms or molecules of each reactant and product take part in a reaction.

Here's how it works:

* Balanced Chemical Equation: A chemical equation is balanced when the number of atoms of each element on the reactant side (left) equals the number of atoms of that element on the product side (right). This ensures that mass is conserved during the reaction.

* Stoichiometric Coefficients: These are the numbers written in front of each chemical formula in a balanced equation. They represent the relative number of moles (and therefore atoms or molecules) of each substance involved in the reaction.

Example:

The balanced chemical equation for the combustion of methane is:

```

CH₄ + 2O₂ → CO₂ + 2H₂O

```

* Reactants: Methane (CH₄) and Oxygen (O₂)

* Products: Carbon Dioxide (CO₂) and Water (H₂O)

Interpretation:

* 1 molecule of methane reacts with 2 molecules of oxygen.

* This produces 1 molecule of carbon dioxide and 2 molecules of water.

Key Points:

* Stoichiometric coefficients are crucial for understanding the quantitative relationships in chemical reactions.

* They allow you to predict the amount of product formed from a given amount of reactant or vice versa.

* It's important to remember that coefficients represent moles, not individual molecules or atoms.

Let me know if you have any more questions!