Rank the compounds below from lowest to highest viscosity based on their structures. (Hint: hydrogen bonds formed between molecules with N-H groups are weaker than those formed between molecules with O-H groups.)
1-propanol, CH3CH2CH2OH
propane, CH3CH2CH3
propanal, CH3CH2CH=O
1-propanamine, CH3CH2CH2NH2
Please help me out! I've been stuck on this problem for ages!