Bitumen (asphalt) (tar) is a mixture of chemicals left over at the end of a distillation process. As it is not a pure substance (a single chemical), we cannot provide you with a chemical formula.
chemical formula
The chemical formula for glucose is C6H12O6.
The chemical formula for CF is carbon monofluoride.
The chemical formula for Fructose is C6H12O6
That is the chemical formula. SnCl4 is the chemical formula for tin(IV) chloride.
Bitumen is a mixture of many organic compounds, not only one chemical compound.
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There is none. Bitumen is not a pure compound but a very complex mixture of various large, branched, (poly)aromatic or olefinic hydrocarbon polymeres.
Energy has no chemical formula as it is not a chemical.
Perhaps the main effect on the physical apperance of bitumen caused by aging is stiffening; the bitumen gets less fluid. This applies to pure bitumens without modification. Indeed, bitumen aging is complex both in chemical and physical terms.
why bitumen is used
chemical formula
The chemical formula for glucose is C6H12O6.
the chemical formula for a ribose is C12H22O11.
The chemical formula of mannose is C6H12O6.
The chemical formula for CF is carbon monofluoride.
The chemical formula for Fructose is C6H12O6