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antnaoh
2 năm trước
Giúp mik vs ,vote +5 sao đầy đủ !!!!!!!!!!! Hòa tan 8g hh kim loại A,B có hóa trị lần lượt là 2 và 3 trong dd HCl dư sau PƯ ta thu được 6,72 lít H2.Tính khối lượng muối khan thu được sau PƯ
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