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Energy has no chemical formula as it is not a chemical.
chemical formula
That is the chemical formula. SnCl4 is the chemical formula for tin(IV) chloride.
Copper sulfate, chemical formula CuSO4
Sodium chloride, chemical formula NaCl
Sodium chromate, chemical formula H2CrO4
Mercury sulfide, chemical formula HgS
Calcium carbonate,CaCO3
It is a chemical formula.