Если массовая доля неизвестного элемента в X₂S₃ равна 2/3, вычислите молярную массу соединения (г/моль).

  1. 360
  2. 244
  3. 320
  4. 288

📝 Detailed explanation

ω(S) = 1/3 = 96/M → M = 288. (S₃ = 96 г, X₂ = 192 г, x = 96 → элемент Mo... здесь важна только M.)
56 / 84 (67%)
Question 56 of 84
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