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tahaiyen.toan31
2 năm trước
cho 13g kẽm ( zn ) tác dụng hoàn toàn vs axit clohidric (hcl ) tạo thành muối kẽm clorua( zncl3 ) giải phóng khí hidro (h2 ) a) viết pthh b) tính khối lượng hcl tam gia pư vs khối lượng khí h2 tạo thành ? c) nếu có 3mol kẽm tham gia PƯ vs 7 mol HCL thì khối lượng Zncl2 , sinh ra bao nhiêu gam ?
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