Cho m (g) dd NaOH 10% tác dụng vs 170g dd ZnCl2 12%.Sau phản ứng thu đc 9,9g kết tủa trắng . tính m? các siêu sao hóa giúp em vs ạ em lm r nhưng mà vẫn ko đúng tại bài có 2 trường hợp liềnn

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