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tuanhuy069600
2 năm trước
Bn nào giúp mik mik hứa sẽ hậu tạ xứng đáng. Có 3 chất đựng trong bình kín là CH4,C2H4, CO2. Hãy dùng phương pháp hóa học để nhận biết 3 chất này (ghi phương trình phản ứng nếu có)
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