Один из двух сосудов равного объема заполнен органической кислотой (d = 1,28 g/ml), второй — водой. Потребовалось 12,95 ⋅ 10²³ молекул кислоты и 4,214 ⋅ 10²⁴ молекул воды. Определите кислоту.

  1. HCOOH
  2. CH₃COOH
  3. HOOC-COOH
  4. CH₂(NH₂)COOH
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