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dungdeptrai2018
2 năm trước
Cho 33,5 gam hỗn hợp X gồm MgSO4và MgCl2 tác dụng vừa đủ với 120 gam dung dịch BaCl2, sinh ra được 46,6 gam kết tủa và dung dịch Y. a/ Tính khối lượng mỗi chất trong X. b/ Tính C% dung dịch HCl đã dùng. c/ Tính C% chất tan trong dung dịch Y.
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