Answer:
It tells us the amount of atoms of each element in a compound. It also shows the symbol of an element and the ratio of the element to another.
Step-by-step explanation:
Example: H2O (2 hydrogen atoms and 1 oxygen atom)
a mathematical relationship or rule expressed in symbols.
a set of chemical symbols showing the elements present in a compound and their relative proportions, and in some cases the structure of the compound.
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