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lenkagaminetv
2 năm trước
đốt cháy 7,5 gam hỗn hợp gồm CH4 , C2H4 , C2H2 cần V lít không khí ( đktc) . Sau khi pư xảy ra hoàn toàn thu đc 6,72 lít CO2 ( đktc) và x gam nước . Tính V và x? Mong mn jup mk ạ !!! thanks !!
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