A carbohydrate is a biomolecule consisting of carbon (C), hydrogen (H) and oxygen (O) atoms, usually with a hydrogen -- oxygen atom ratio of 2: 1 (as in water); in other words, with the empirical formula C (H O) (where m may be different from n). This formula holds true for monosaccharides. Some exceptions exist; for example, deoxyribose, a sugar component of DNA, has the empirical formula C H O. The carbohydrates are technically hydrates of carbon; structurally it is more accurate to view them as aldoses and ketoses.
the chemical formula cho can be classified as
carbohydrate carbohydrate