give an example of a chemical formula.

How complicated do you want to go?

H2O water
C6H12O6 glucose (sugar)

Sure! One example of a chemical formula is H2O, which represents water. In this formula, "H" represents hydrogen and "O" represents oxygen. The number 2 indicates that there are two hydrogen atoms bonded to one oxygen atom. You can determine the chemical formula of a compound by knowing the elements present and their respective ratios.