Determine the structure of the compound using the following information. The infrared spectrum contains a single, strong peak at 3280 M=129?

Based on the information provided, the compound likely contains a hydroxyl group (OH) which is indicated by the strong peak at 3280 cm^-1 in the infrared spectrum. The molecular weight of the compound is 129 g/mol.

One possible compound that fits this description is ethanol (C2H5OH). Ethanol has a molecular weight of 46 g/mol for the C2H5 part and 17 g/mol for the OH part, totaling 63 g/mol. This is less than the given molecular weight of 129 g/mol, so it is possible that there are additional functional groups or atoms present in the compound.

Without more information, it is difficult to determine the exact structure of the compound. Additional spectroscopic data or chemical tests would be needed to confirm the structure.

The strong peak at 3280 cm-1 in the infrared spectrum indicates the presence of an O-H group. This suggests that the compound is an alcohol. The molecular weight of the compound is 129, which is consistent with the molecular weight of 2-propanol. Therefore, the structure of the compound is likely to be 2-propanol.