Final answer:
One mole of NH₃ equals one mole of ammonia molecules and contains 3 moles of hydrogen atoms, totaling approximately 1.807 \u00d7 1024 hydrogen atoms.
Step-by-step explanation:
One mole of NH₃ (ammonia) is equivalent to one mole of ammonia molecules. Since ammonia has a molecular formula of NH₃, this means that there are three hydrogen atoms for every one nitrogen atom in each molecule of ammonia. So, one mole of ammonia contains the Avogadro number of molecules, which is approximately 6.022 \u00d7 1023 molecules.
To calculate the number of hydrogen atoms in one mole of ammonia, you would use the fact that each ammonia molecule contains three hydrogen atoms. Therefore, one mole of NH₃ contains 3 moles of hydrogen atoms, which would be 3 \u00d7 6.022 \u00d7 1023 hydrogen atoms.
Example 12.2.1: Mole Ratio
If 4.20 moles of hydrogen are reacted with an excess of nitrogen, two moles of ammonia are produced, following the balanced chemical equation:
3 H₂ + N₂ → 2 NH₃