Определите плотность оксида азота (III) относительно гелия.

  1. 19
  2. 20
  3. 0,0526
  4. 15

📝 Detailed explanation

DHe = Mгаза / MHe
M(N2O3) = 2⋅14 + 3⋅16 = 76 г/моль
DHe = 76 / 4 = 19
4 / 10 (40%)
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