1. Identify the Number of Nitrogen Atoms per Molecule:
* The formula NH₄₂C₂O₄ shows that there are two nitrogen atoms (N) in each molecule.
2. Calculate the Number of Molecules:
* One mole of any substance contains Avogadro's number of particles (6.022 x 10²³).
* Therefore, 7 moles of NH₄₂C₂O₄ contain 7 moles * 6.022 x 10²³ molecules/mole = 4.2154 x 10²⁴ molecules.
3. Calculate the Total Number of Nitrogen Atoms:
* Since there are 2 nitrogen atoms per molecule, the total number of nitrogen atoms is: 4.2154 x 10²⁴ molecules * 2 atoms/molecule = 8.4308 x 10²⁴ atoms.
Therefore, there are approximately 8.4308 x 10²⁴ nitrogen atoms in 7 moles of NH₄₂C₂O₄.
