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[Chemical Knowledge]：Ethylene, similarities and differences between chemical formula and molecular formula

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Ethylene is a common organic compound with the chemical formula C2H4 and the molecular formula CH2 = CH2. Ethylene is a colorless, pungent odor gas, commonly used in the production of synthetic rubber, plastic and other materials. In the world of chemistry, chemical formula and molecular formula are two different concepts. A chemical formula is a combination of chemical element symbols and numbers to indicate the type and quantity of elements in a compound. A molecular formula is a combination of chemical element symbols and numbers to represent the type and quantity of elements in a compound. Both the chemical formula and the molecular formula of ethylene contain the element species and quantity of the compound, but they are expressed in slightly different ways. The chemical formula C2H4 indicates that the ethylene molecule contains 2 carbon atoms and 4 hydrogen atoms, while the molecular formula CH2 = CH2 more intuitively indicates that the two carbon atoms in the ethylene molecule are connected by a double bond, and each carbon atom is also connected by two hydrogen atoms. Through the comparison of chemical formula and molecular formula, we can better understand the chemical composition and structure of ethylene molecule. In addition to ethylene, many other organic compounds also have their corresponding chemical formulas and molecular formulas, which are concise descriptions of chemical structures that help us better understand and study the chemical world. It is hoped that through the introduction of this article, readers can have a deeper understanding of the chemical formula and molecular formula of ethylene, and can also have a clearer understanding of the chemical formula and molecular formula.

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