Final answer:
A real example of a molecule with a mass of 7.31 × 10⁻²³ g is water (H2O).
Step-by-step explanation:
A molecule with a mass of 7.31 × 10⁻²³ g could be an example of a real molecule such as a water molecule (H2O).
Water is a common molecule found on Earth and consists of two hydrogen atoms bonded to one oxygen atom. The molecular mass of water is approximately 18 grams per mole, which corresponds to 7.31 × 10⁻²³ grams for a single molecule.
Other examples of real molecules with a similar mass could include carbon dioxide (CO2) or glucose (C6H12O6), but it's important to note that the specific mass of a molecule can vary depending on its isotopes and other factors.
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