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kieuanhsky
2 năm trước
Cho 6,5 gam kẽm (zn) tác dụng với axit clorua (hcl), ta thu được khí h2. A) tính thể tích khí hiđro thu được (đktc)? B) dùng toàn bộ khí hidro sinh ra ở trên của oxit. Tính khối lượng kim loại thu được. Cho Na=23,O=16,H=1
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