What are five examples of molecules and their formulas?

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t-nez eNotes educator| Certified Educator

Molecules are groups of atoms that are chemically bonded together. They are representative particles of compounds. Here are some examples of chemical compounds that you're probably aware of, and their formulas:

carbon dioxide - `CO_2`

glucose (a simple sugar used by cells for energy) - `C_6H_12O_6`

sucrose (white sugar) - `C_12H_22O_11`

sodium hydrogen carbonate (baking soda) - `NaHCO_3`

sodium hypochlorite (bleach) - `NaClO`

acetic acid (vinegar) - `CH_3COOH`

octane (main component of gasoline) - `C_8H_18`

sodium nitrate (a preservative in bacon) - `NaNO_3`

The formula of a chemical compound contains the chemical symbol of each element in the compound, with subscripts to indicate how many of each atom are in a molecule. The empirical formula is the simplest whole-number ratio of atoms in a molecule and the molecular formula is the actual number. For example, notice that the formula of octane can be "reduced". `C_8H_18` is the molecular formula and the empirical formula would be `C_4H_9`

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