1)
a) 2Cr + 3Cl₂ ---> 2CrCl₃ b) 2Fe + O₂ ---> 2FeO c) S + 2Na ---> Na₂S
2)
a) N₂ + 3H₂ ---> 2NH₃ b) Fe + 2HCl ---> FeCl₂ + H₂ c) N₂ + O₂ ---> 2NO d) 4Mn + 7O₂ ---> 2Mn₂O₇ e) 2Al + 3H₂S ---> Al₂S₃ + 3H₂ f) Al₂O₃ + 6HCl ---> 2AlCl₃ + 3H₂O
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1)
a) 2Cr + 3Cl₂ ---> 2CrCl₃
b) 2Fe + O₂ ---> 2FeO
c) S + 2Na ---> Na₂S
2)
a) N₂ + 3H₂ ---> 2NH₃
b) Fe + 2HCl ---> FeCl₂ + H₂
c) N₂ + O₂ ---> 2NO
d) 4Mn + 7O₂ ---> 2Mn₂O₇
e) 2Al + 3H₂S ---> Al₂S₃ + 3H₂
f) Al₂O₃ + 6HCl ---> 2AlCl₃ + 3H₂O