Chemical Formula
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A chemical formula or molecular formula is a way of expressing information about the atoms that constitute a particular chemical compound. The chemical formula identifies each constituent element by its chemical symbol and indicates the number of atoms of each element found in each discrete molecule of that compound. If a molecule contains more than one atom of a particular element, this quantity is indicated using a subscript after the chemical symbol (although 19th-century books often used superscripts). Chemical formulas may be used in chemical equations to describe chemical reactions. For…mehr

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Produktbeschreibung
A chemical formula or molecular formula is a way of expressing information about the atoms that constitute a particular chemical compound. The chemical formula identifies each constituent element by its chemical symbol and indicates the number of atoms of each element found in each discrete molecule of that compound. If a molecule contains more than one atom of a particular element, this quantity is indicated using a subscript after the chemical symbol (although 19th-century books often used superscripts). Chemical formulas may be used in chemical equations to describe chemical reactions. For ionic compounds and other non-molecular substances empirical formula may be used, in which the subscripts indicate the ratio of the elements. The 19th-century Swedish chemist Jöns Jakob Berzelius worked out this system for writing chemical formulas.