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baobinh9296
2 năm trước
Bài 1 : Từ 1 tấn isopren có thể thu được bao nhiêu poliisopren? Bài 2 : Người ta sản xuất poliisopren từ 2- metylbutan. Nếu phản ứng điều chế isopren đạt 95% và phản ứng trùng hợp đạt 90% thì từ 7,2 tấn 2- metylbutan sẽ thu được bao nhiêu poliispren ?
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