Respuesta :

Answer:

2H2O + O2 -- 2H2O

FeCl3 + 3NaOH -- Fe(OH)3 + 3NaCl

4P + 5O2 -- 2P2O5

2Na + 2H2O -- 2NaOH +H2

2Ag2O -- 4Ag + O2

K + MgBr -- KBr + Mg

Explanation:

the moles of each element should be the same in both reactant reaction and product reaction

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