Here's how:
* Subscripts: The numbers written as subscripts after the element symbols in a formula represent the number of atoms of that element in one molecule of the compound.
* Ratio: The subscripts indicate the ratio of different elements in the compound.
Example:
* H₂O (water): This formula shows that there are two hydrogen atoms (H₂) and one oxygen atom (O) in each molecule of water. The ratio of hydrogen to oxygen is 2:1.
Other Considerations:
* Empirical Formula: This formula shows the simplest whole-number ratio of elements in a compound. It doesn't necessarily represent the actual number of atoms in a molecule.
* Molecular Formula: This formula shows the actual number of atoms of each element in a molecule.
In summary, a chemical formula provides valuable information about the composition of a compound, including the ratio of its elements.
