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xuantruong11042001
2 năm trước
44. Dung dịch X chứa 0,12 mol K+; x mol ; 0,12 mol NO3– và 0,05 mol . Cho 300 ml dung dịch Ba(OH)2 0,1M vào X đến khi các phản ứng xảy ra hoàn toàn, lọc bỏ kết tủa, thu được dung dịch Y. Cô cạn Y, thu được m gam chất rắn khan. Tính m.
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