а) 4Zn + 10HNO₃ = 4Zn(NO₃)₂ + NH₄NO₃ + 3H₂O
б) Zn + 4HNO₃ = Zn(NO₃)₂ + 2NO₂↑ + 2H₂O
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а) 4Zn + 10HNO₃ = 4Zn(NO₃)₂ + NH₄NO₃ + 3H₂O
б) Zn + 4HNO₃ = Zn(NO₃)₂ + 2NO₂↑ + 2H₂O