Molecule Chemistry Example 2

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Example 2

medium
The molecular formula of glucose is C6H12O6\text{C}_6\text{H}_{12}\text{O}_6. How many total atoms are in one molecule of glucose? How many molecules are in one mole of glucose?

Solution

  1. 1
    Count atoms per molecule: 6 C+12 H+6 O=246\text{ C} + 12\text{ H} + 6\text{ O} = 24 atoms per molecule.
  2. 2
    One mole of any substance contains 6.022×10236.022 \times 10^{23} particles (Avogadro's number).
  3. 3
    So one mole of glucose contains 6.022×10236.022 \times 10^{23} molecules, and the total number of atoms is 24×6.022×1023=1.445×102524 \times 6.022 \times 10^{23} = 1.445 \times 10^{25} atoms.

Answer

24 atoms/molecule,6.022×1023 molecules/mol24\text{ atoms/molecule},\quad 6.022 \times 10^{23}\text{ molecules/mol}
Understanding molecular formulas allows us to count atoms at both the molecular and molar scale. The subscripts in a molecular formula tell us the exact number of each type of atom in one molecule.

About Molecule

The smallest unit of a covalent substance, consisting of two or more atoms held together by chemical bonds (typically covalent), acting as a single distinct.

Learn more about Molecule →

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