Answer:
114 grams N₂
Explanation:
To find the answer, you need to (1) convert from moles CuO to moles N₂ (via the mole-to-mole ratio from equation) and then (2) convert from moles to grams (via molar mass from the periodic table). The final answer should have 3 sig figs according to the given value (12.2).
2 NH₃ + 3 CuO --> 3 Cu + 1 N₂ + 3 H₂O
Molar Mass (N₂): 2(14.01 g/mol)
Molar Mass (N₂): 28.02 g/mol
12.2 moles CuO 1 mole N₂ 28.02 grams
----------------------- x ----------------------- x ----------------------- = 114 grams N₂
3 moles CuO 1 mole N₂
