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sdhdks123
2 năm trước
Đốt cháy hoàn toàn 21g hợp chất hữu cơ A sau phản ứng thu được 33,6 lít khí CO2 và 27g H2O a)Tìm công thức phân tử của A. Biết MA=42. b)Cho toàn bộ sán phẩm cháy vào 1ldung dịch sau phản ứng NaOH 2M. Tính khối lượng muối có trong dung dịch sau phản ứng.
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