What does the number In SUBSCRIPT (egO_(2)) within a chemical formula represent? The number of MOLECULES of the FIRST ATOM within the formula The number of MOLECULES there are (relative to the other reactants and products in the equation) The number of ATOMS of a particular ELEMENT within a MOLECULE The number of MOLECULES within the ATOM

## Step1: Understanding Subscripts in Chemical Formulas### In a chemical formula, subscripts indicate the number of atoms of each element present in a molecule. They are written to the right of the chemical symbol of the element, providing information about the atomic composition of the compound.## Step2: Example of Subscripts### For instance, in the chemical formula for oxygen gas ( ), the subscript '2' indicates that there are two oxygen atoms in each molecule of oxygen gas.## Step3: Evaluating Other Options### The other options do not accurately describe the purpose of subscripts. Subscripts do not represent the number of molecules of the first atom within the formula, the number of molecules relative to other reactants and products, or the number of molecules within an atom.#