September 2021 0 6 Report
Очень срочно, помогите с заданием по химии, пожалуйста! Схеме превращения (-3)P-->P(+5) соответствует уравнение:
А. 4P + 5O2 =2P2O5. Б. P2O5 + 3H2O = 2H3PO4. В. Mg3P2 + 4O2 = 3MgO + P2O5. Г. P2O5 + 6NaOH = 2Na3PO4 + 3H2O.
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