Write the simplest formula for each of the following...

Write the simplest formula for each of the following substances, listing the elements in the order given. a. a molecule containing one carbon atom and two oxygen atoms b. a compound containing one aluminum atom for every three chlorine atoms c. perchloric acid, which contains one hydrogen atom, one chlorine atom, and four oxygen atoms d. a molecule containing one sulfur atom and six chlorine atoms

Write the simplest formula for each of the following substances, listing the elements in the order given.
a. a molecule containing one carbon atom and two oxygen atoms
b. a compound containing one aluminum atom for every three chlorine atoms
c. perchloric acid, which contains one hydrogen atom, one chlorine atom, and four oxygen atoms
d. a molecule containing one sulfur atom and six chlorine atoms

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Key Concepts

Empirical and Molecular Formulas

The empirical formula represents the simplest whole-number ratio of the elements in a compound, while the molecular formula shows the actual number of atoms in a molecule. In many cases, such as when the given ratios are already in the simplest form, both formulas are the same.

Element Ordering in Formulas

The order in which elements are listed in a chemical formula can be specific or conventional, depending on the context. Some problems or nomenclature rules require that elements be listed in a particular order, such as baseline order for certain groups of compounds.

Chemical Formulas

Chemical formulas are a way to represent the composition of a substance using element symbols, with subscripts indicating the number of atoms of each element present. They serve as a concise representation of the molecular or empirical structure of compounds.

Subscripts

Subscripts in chemical formulas denote the number of atoms of each element in a molecule. They are used to communicate the proportionate counts of atoms and are essential in expressing the simplest ratio in which the elements combine.

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