What is number of hydrogen molecules needed to synthesize 3.4 g of ammonia by reaction with nitrogen?

Step-by-step solution

The balanced chemical equation for the synthesis of ammonia is: N₂ + 3H₂ 2NH₃ Molar mass of NH₃ = 14 + 3 1 = 17 g/mol Moles of NH₃ to be synthesized = 3.4 17 = 0.2 mol From the balanced equation, 2 moles of NH₃ require 3 moles of H₂ . Moles of H₂ required = 3 2 0.2 = 0.3 mol Number of H₂ molecules = 0.3 6.022 10²³ = 1.8066 10²³ Answer: 1.8066 10²³