- noun a representation of the chemical composition of a compound in terms of its atoms
- A mathematical expression utilized to relate quantities and solve problems. For example, the mass-energy equation is expressed as: E = mc2, where E is energy, m is mass, and c is the speed of light in a vacuum.
- A combination of chemical symbols and numbers which describes the chemical composition of a substance. For instance, the chemical formula of boron trichloride is BCl3, indicating that for each boron atom there are three chlorine atoms. Also called chemical formula (2).
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