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thuychi752003
2 năm trước
Cho 19(g) hỗn hợp Fe và ZnO phản ứng vừa đủ với 500ml dung dịch HCl thu được 1.12l khí H2(đktc). Tính khối lượng mỗi chất trong hỗn hợp ban đầu. tính nồng độ molcuar dung dịch HCl
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