Question Detail
Question
In the equation N₂ + 3H₂ → 2NH₃, how many grams of H₂ are needed to react with 28 g of N₂?
Correct Answer
Option C is the correct answer.
Detailed Explanation
Molar mass N₂ = 28 g/mol, so 28 g N₂ = 1 mol N₂. From equation, 1 mol N₂ requires 3 mol H₂. Mass of 3 mol H₂ = 3 mol × 2 g/mol = 6 g.
Hint
Convert grams of N₂ to moles, use the mole ratio to find moles of H₂, then convert back to grams.