Urea Achieve HW Question

[Sila_Sozeri_1C]

"Urea is an organic compound widely used as a fertilizer. Its solubility in water allows it to be made into aqueous fertilizer solutions and applied to crops in a spray. What is the maximum theoretical number of water molecules that one urea molecule can hydrogen bond with? Ignore shape for the purposes of this answer."

Can someone please guide me through the steps of this question? Thank you so much in advance!!

[Chem_Mod]

Think about how hydrogen bonds form between water molecules: they form between a partially positive H (covalently bonded to a partially negative O) and a lone pair of electrons on the partially negative O of a different water molecule. This is generally true for all hydrogen bonds: they form between a partially positive H on one molecule (H bonded to F, O or N) and a lone pair of a partially negative O, N or F on another molecule. Count the number of H's and lone pairs that fit the criteria for hydrogen bonding in the urea molecule

[Ryan Khiev 1L]

Hydrogen bonding occurs when H molecules already bonded with highly electronegative atoms interact with F, O, or N, because these atoms have particularly high electronegativities that exhibit a specific type or intermolecular force called hydrogen bonding. To answer your question, you would count up where an H molecule would interact with one of the aforementioned elements, or whether the H atoms on the molecule are bonded with an atom with a high electronegativity (doesn't include elements such as Carbon).

Hope this helps!