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Quyen25072002
2 năm trước
Dùng khí hiđro để khử hoàn toàn 20,25g kẽm oxit ở nhiệt độ cao. a) Hãy viết phương trình phản ứng xảy ra. b) Tính khối lượng kẽm sinh ra sau khi phản ứng kết thúc. c) Nếu thả lượng kẽm trên vào một dung dịch có chứa 7,3 axit clohiđric. Tính khối lượng muối tạo thành.
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