Answer:
43 g N₂
Explanation:
To find the mass of N₂ required, you need to (1) convert grams H₂ to moles H₂ (via molar mass), then (2) convert moles H₂ to moles N₂ (via mole-to-mole ratio from equation coefficients), and then (3) convert moles N₂ to grams N₂ (via molar mass). It is important to arrange the conversions in a way that allows for the cancellation of units. The final answer should have 2 sig figs to match the amount of sig figs of the given value.
Molar Mass (H₂): 2(1.008 g/mol)
Molar Mass (H₂): 2.016 g/mol
Molar Mass (N₂): 2(14.009 g/mol)
Molar Mass (N₂): 28.018 g/mol
1 N₂(g) + 3 H₂(g) -----> 2 NH₃(g)
9.3 g H₂ 1 mole 1 mole N₂ 28.018 g
-------------- x ---------------- x -------------------- x ------------------ = 43 g N₂
2.016 g 3 moles H₂ 1 mole
