Câu 1: Đốt cháy hoàn toàn 11,6g hỗn hợp khí etilen và khí metan cần dùng 29,12L khí O2 (đktc) a, Viết phương trình hóa học xảy ra b, Tính thành phần phần trăm theo khối lượng của mỗi khí trong hỗn hợp ban đầu c, Tính thể tích khí CO2 thu đc ở đktc Câu 2: Tìm thể tích rượu etylic nguyên chất có trong 750ml rượu 90° Giúp mình với mai thi rồi :((

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