what is the difference between a chemical formula and a structural formula?
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A molecular formula uses chemical symbols and subscripts to indicate the exact numbers of different atoms in a molecule or compound. An empirical formula gives the simplest, whole-number ratio of atoms in a compound. A structural formula indicates the bonding arrangement of the atoms in the molecule.
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In chemistry, the empirical formula of a chemical compound is the simplest positive integer ratio of atoms present in a compound. ... An empirical formula makes no mention of the arrangement or number of atoms.
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Isomers always have the same chemical formula. ... Structural (constitutional) isomers have the same molecular formula but a different bonding arrangement among the atoms. Stereoisomers have identical molecular formulas and arrangements of atoms.
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The bonding and structure of substances determine their properties. Bonding is the way the atoms are held together. The structure is the way the atoms are arranged relative to each other.
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1 Answer. An ionic formula is effectively an empirical formula. Empirical formulae are the simplest ratio of elements in a compound. An ionic formula is the simplest ratio of ions in an ionic compound.
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A structural formula uses lines to show the bonds between the atoms. A condensed structural formula omits most or all the bonds.
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A structural isomer, also known as a constitutional isomer, is one in which two or more organic compounds have the same molecular formulas but different structures. The two molecules below have the same chemical formula, but are different molecules because they differ in the location of the methyl group.
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Distinguish between structural and optical isomers in carbohydrates, describing examples of each. STRUCTURAL isomers have the same molecular formula but their atoms are linked in different sequences. ... In contrast, OPTICAL isomers are identical in every way except that they are mirror images of each other.
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A formula is a mathematical rule or relationship that uses letters to represent amounts which can be changed – these are called variables. ... A formula is a calculation for a specific purpose, for example converting Fahrenheit to Celsius or vice versa. A formula is also always true, no matter what values are put in.
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A chemical equation consists of the chemical formulas of the reactants (on the left) and the products (on the right). The two are separated by an arrow symbol (“→” usually read aloud as “yields”). Each individual substance's chemical formula is separated from others by a plus sign.
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Molecular formulas describe the exact number and type of atoms in a single molecule of a compound. ... A molecular formula is not a chemical name, and it contains no words. Although a molecular formula may imply certain simple chemical structures, it is not the same as a full chemical structural formula.
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A chemical symbol is a one- or two-letter designation of an element. Compounds are combinations of two or more elements. A chemical formula is an expression that shows the elements in a compound and the relative proportions of those elements.
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In a word equation, the names of the reactants are separated from the names of the products by a yield arrow. A skeleton equation shows the chemical formulas and physical states of the reactants and products, but it does not account for their relative amounts.
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9 Answers. BRIAN M. The empirical formula represents the ratio of atoms in a molecule in lowest terms, while the molecular formula is the actual atom number in the molecule.
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The empirical formula of a compound is the simplest whole number ratio of each type of atom in a compound. It can be the same as the compound's molecular formula, but not always. An empirical formula can be calculated from information about the mass of each element in a compound or from the percentage composition.
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Molecular formulas contain no information about the arrangement of atoms. Because of this, one molecular formula can describe a number of different chemical structures. A structural formula is used to indicate not only the number of atoms, but also their arrangement in space.
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A condensed structural formula is a system of writing organic structures in a line of text. It shows all atoms, but omits the vertical bonds and most or all the horizontal single bonds.