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ndaminh2002
2 năm trước
: Cho khí H2 qua bột đồng oxit CuO nung nóng thu được đồng và nước. a. Viết phương trình hóa học của phản ứng. b. Sau phản ứng thu được 3,2 gam Cu. Hỏi đã dùng bao nhiêu lít khí H2 (đktc)? Sinh ra bao nhiêu gam nước?
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