помогите пожалуйста Na₂O + ? → Na3PO4 ​

Ответ:

The balanced chemical equation for the reaction of Na₂O with a substance to form Na3PO4 is:

4Na₂O + P₄O₁₀ → 4Na₃PO₄

Therefore, the substance that is required to react with Na₂O to form Na3PO4 is P₄O₁₀ (tetraphosphorus decaoxide).