Question

which two important pieces of information are found in a chemical formula? the number of atoms present in the compound which kinds of atoms are in the compound which other atoms will react with the compound how the compound is useful

Explanation:

A chemical formula shows the elements (kinds of atoms) in a compound and their ratios which can be used to find the number of atoms. It doesn't show reactivity or utility.

Answer:

the number of atoms present in the compound
which kinds of atoms are in the compound