mass of N₂ = 25.76 g
mass of O₂ = 58.88 g
Explanation:
Nitrogen (N₂) will react with oxygen (O₂) to form trinitrogen tetroxide (N₂O₄).
N₂ + 2 O₂ → N₂O₄
number of moles = mass / molecular weight
number of moles of N₂O₄ = 85 / 92 = 0.92 moles
Knowing the chemical reaction we devise the following reasoning:
if 1 moles of N₂ react with 2 moles of O₂ to produce 1 mole of N₂O₄
then X moles of N₂ react with Y moles of O₂ to produce 0.92 moles of N₂O₄
X = (1 × 0.92) / 1 = 0.92 moles of N₂
Y = (2 × 0.92) / 1 = 1.84 moles of O₂
mass = number of moles × molecular weight
mass of N₂ = 0.92 × 28 = 25.76 g
mass of O₂ = 1.84 × 32 = 58.88 g
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