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phubui
2 năm trước
Đốt cháy hoàn toàn 3,1 gam P trong bình chứa 5,6 lít khí oxi thu được sản phẩm là P2O5 a. Viết PTHH xảy ra. b. Sau phản ứng chất nào dư và dư bao nhiêu gam? c. Tính khối lượng P2O5 thu được sau phản ứng.
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