Question Detail
Question
Which of the following compounds is 38.86 % nitrogen?
Correct Answer
Option B is the correct answer.
Detailed Explanation
Calculate %N: NO: N=14, O=16, molar mass=30, %N=(14/30)×100=46.67%. NO₂: 14/46=30.4%. N₂O₃: 28/76=36.8%. N₂O₅: 28/108=25.9%. None are 38.86%. There may be a typo; NO₂ is 30.4%, not matching. Perhaps the compound is N₂O? 28/44=63.6%. None match. Check NO: 46.7%.
Hint
Mass percent = (mass of N / molar mass) × 100%.