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2 năm trước
Cho 28g sắt phản ứng hoàn toàn với dung dịch axit sunfuric loãng (dư) a, Viết phương trình hóa học cho phản ứng trên b, Tính thể tích hidro sinh ra (đktc) c, Nếu dùng toàn bộ lượng hiđro bay ra ở trên đem khử 12 g bột CuO ở nhiệt độ cao thì chất nào còn dư? dư bao nhiêu gam ? (Cho biết : Fe=56,Cu = 64,H=1,O=16)
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