В смеси H₂ + C₃H₈ число атомов углерода в 0,3 раза больше числа атомов водорода. Определите мольную долю водорода в смеси.

  1. 2/3
  2. 1/3
  3. 1/2
  4. 4/5

📝 Detailed explanation

Пусть n(H₂)=a, n(C₃H₈)=b. N(C)=3b, N(H)=2a+8b. 3b = 0,3(2a+8b) → 3b = 0,6a+2,4b → 0,6b=0,6a → a=b. Доля H₂ = a/(a+b) = 1/2.
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