1. Balanced Chemical Equation

The balanced chemical equation for the reaction is:

3H₂(g) + WO₃(s) → W(s) + 3H₂O(g)

2. Mole Ratio

The balanced equation shows that 3 moles of hydrogen (H₂) react to produce 1 mole of tungsten (W).

3. Calculation

* Start with the moles of hydrogen: 2405 moles H₂

* Use the mole ratio from the balanced equation: (1 mole W / 3 moles H₂)

* Multiply to find moles of tungsten: 2405 moles H₂ * (1 mole W / 3 moles H₂) = 801.67 moles W

Answer: You can produce approximately 801.67 moles of tungsten from 2405 moles of hydrogen and excess WO₃.