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vuongpham
2 năm trước
: Người ta đốt cháy lưu huỳnh trong bình chứa 15 gam oxi. Sau phản ứng thu được 19,2 gam khí sunfurơ (SO2) a. Tính số gam lưu huỳnh đã cháy b. Tính số gam oxi còn dư sau phản ứng cháy
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