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tuannghia2102003
2 năm trước
Khi hòa tan thêm 64 g NaOH vào dd có chứa 0,4 mol NaOH thì thu được dd mới có nồng độ M cao hơn nồng độ dd ban đầu là 2M. Tính CM của dd NaOH trước và sau khi trộn .
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