Bài:
`Mg + H_2SO_4 → MgSO_4 + H_2↑`
NL: đây là Phản ứng Thế.
Mg + H2SO4 → H2 +MgSO4
Pháp luật quy định ntn về quyền tự do kinh doanh và nghĩa vụ đóng thuế
Choose the best answer.
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