[stupidquestions]

a) NH₃ and O₂
b) NH₃ and CH₄
c) NH₃ and H₂
d) H₂O and CH₃OH
e) NH₃ and H₂O

I'm really confused here since I thought hydrogen bonds only formed between two or more molecules with the same structure, but here it's asking me to compare different molecules.

Also, could you draw one of those bonds? Not sure how to do that, either.

[Babcock_Hall]

Hydrogen bonds can easily form between two unlike molecules.  What do you know about hydrogen bonds and lone pairs of electrons?