Question

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ПОЖАЛУЙСТА!!!

Answer 1

1-
1) 2Li +S = Li2S
2) 2Na + Br2 = 2NaBr
3) 4Al + 3Si = Al4Si3 
4) 2Ca + O2 = 2CaO
5) 3Ba + N2 = Ba3N2
2-
1) Ba + 2H2O = Ba(OH)2 + H2
2) Ba + 2HCl = BaCl2 + H2
3) Ba + PbCl2 = BaCl2 + Pb