Urea is a water-soluble compound with a formula of (NH2)2CO , found in urine. Hydrophobic indicates a molecule that is non-polar, and therefore insoluble in water, so Urea is not hydrophobic.
No
Urea (CO(NH2)2; compound formed in the liver via the urea cycle and excreted by the kidney; principal end product of protein catabolism)
hydrocarbon
No, as the head is not hydrophobic, it is actually hydrophilic. However, the tail is hydrophobic.
No, ammonia is hydrophilic.