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lai19001090
2 năm trước
Dãy chất nào sau đây toàn là muối trung hòa: NaCl, MgSO4, Fe(NO3)3 NaHCO3, MgCO3 ,BaCO3 NaOH, ZnCl2 , FeCl2 NaCl, HNO3, BaSO4
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