Answer:
6.02×10²³ molecules of nitrogen and 1.20×10²⁴ molecules of hydrogen react with each other to form 1.80×10²⁴ molecules of ammonia.
Explanation:
Reaction is:
N₂ + 3H₂ → 2NH₂
1 mol of nitrogen reacts with 3 moles of hydrogen to produce 2 moles of ammonia.
1 mol = 6.02×10²³ (NA) molecules
2 moles = 2NA → 1.20×10²⁴ molecules
3 moles = 3NA → 1.80×10²⁴ molecules