Вопрос школьника по предмету Химия
Na + S =
HCl + Mg =
Fe(OH)3 = Fe2O3 + ?
H2SO4 + Al = Al2(SO4)3 + H2
H2 + Cl2 =
Zn + O2 =
Al + S =
Ca + N2 =
Mg + CuCl2 =
Ca + HCl =
Zn + FeCl3 =
Ответ учителя по предмету Химия
2Na + S = Na₂S
2HCl + Mg = MgCI₂ + H₂
2Fe(OH)₃
= Fe₂
O₃
+ 3H₂O
3H₂
SO₄
+ 2Al = Al₂
(SO₄
)₃
+ 3H₂
H₂
+ Cl₂
= 2HCI
2Zn + O₂
=2ZnO
2Al + 3S = AI₂S₃
3Ca + N₂
= Ca₃
N₂
Mg + CuCl₂
=MgCI₂ + Cu
Ca + 2HCl = CaCI₂ + H₂
3Zn + 2FeCl₃
=3ZnCI₂ + 2Fe
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