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Nguyen1
2 năm trước
9.Nêu pp hóa học tách các chất sau đây ra khỏi hh chất rắn S, K2SO4, Zn, BaSO4, CaSO3 10.Tách riêng từng chất nguyên chất từ hh : đá vôi, vôi sống, thạch cao và muối ăn.
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