That each molecule contains 1 atom of carbon and 4 atoms of hydrogen.
It tells what elements are present in a molecule and how many atoms of each element are present.
A chemical symbol is just an abbreviation of that chemical's name while a formula will tell you how many of each different element are in a specific chemical compound.
Melting is not a chemical change because the chemical formula of water remain unchanged.
What and how many elements it's composed of
A chemical formula tells you the number of each type of atom in the molecule or structure.
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yes it does
Water has the chemical formula H2O. Acetic acid has the formula CH3COOH.
Energy has no chemical formula as it is not a chemical.
You have to look carefully to the chemical formula.
By looking at an actual chemical formula for a compound, we could tell you how many hydrogen atoms there are per molecule (or at least per formula unit) of that compound.Without the specific chemical formula, we can't. So the question is meaningless ... how many hydrogen atoms are present in a chemical formula depends on what the chemical formula is.
chemical formula