 Okay, let's try the second problem then. Classified to following molecules is homoatomic or heterotomic. So again, remember, homoatomic, only one atom, one type of atom. So this one has only Hs, this one has Hs and O's, this one has Hs and O's. So hydrogen is the only homoatomic molecule. So this is hydrogen homoatomic, water is heterotomic, and hydrogen peroxide is also heterotomic. Why? Because there's both hydrogens and oxygen. So it seems like you guys are getting it since we didn't have any questions in between the two videos, so let's just go to the next part.