Question

помогите????!!!!!!!!!!!!!!!!

Answer 1

А) 4 Al + 3 O2 = 2 Al2O3
Б)2 K + H2CO3 = H2 + K2CO3
В)Cu + HBr = CuBr + H
Г)2 AgCl + 2 Hg = Hg2Cl2 + 2 Ag
Д)P2O5 + 3 H2O = 2 H3PO4
Е)2 Na + S = Na2S
Ж)Au+H2SiO3=AuSio3+H2
З)Al + MgCl2 = AlCl2 + Mg