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knowyuri1989
2 năm trước
Đốt hết 8,2g hh B gồm etan và axetilen thu được 9g hơi nước a) Tính kh.lượng mỗi chất trong hh b) Đem 1/2 hh B pứ dd Br2 32% vừa đủ. Tính kh.lượng dd Br2 cần dùng Mọi người giúp mình với ạ. Mình sẽ vote 5*, câu tl hay nhất
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