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baoyentran317
2 năm trước
Giúp em vs ạ Em đang cần gấp Đốt cháy hết 6g khí hiđro trong oxi người ta thu được 54g nước. a) Viết phương trình chữ của phản ứng. b) Viết công thức về khối lượng của phản ứng. c) Tính khối lượng oxi đã phản ứng?
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