1. Balanced Chemical Equation:

The balanced chemical equation for the reaction is:

N₂ + 3H₂ → 2NH₃

2. Mole Ratios:

The balanced equation tells us the mole ratios:

* 1 mole of N₂ reacts with 3 moles of H₂ to produce 2 moles of NH₃

3. Determine Moles of Reactants:

You're asking how many moles are needed to react. Since we have a 1:3 ratio of N₂ to H₂, we need 3 times the number of moles of H₂ compared to N₂.

4. Answer:

Therefore, to react two moles of N₂, you would need 6 moles of H₂.

So the correct answer is (c).