The number of Chlorine atoms in 4.0 mol of PCl3 is; 7.224 × 10²⁴
From stoichiometry;
- Since there are 3 moles of Chlorine in 1 mole of PCl3.
- We can conclude that there are 12 moles of Chlorine, Cl in 4 moles of PCl3.
According to Avogadro's constant; there are 6.02 × 10²³ atoms per mole of an element.
Ultimately, the number of atoms in 4 moles of PCl3 is; 12 × 6.02 × 10²³.
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