calculate the vol(ml) of aqueous 40% of sucrose having a density of 0.911g/ml, required to furnish 1.5mol C atoms (sucrose=C12 H22 O11); c=12,h=1,o=16).

Which of the following is not a characteristic of a hydrogen bond? 1. it is responsible for the unusual physical properties of water. 2. it is weaker than a covalent bond. 3. it is stronger than other dipole-dipole interactions. 4. it can occur when hydrogen is covalently bound to very electronegative elements liks f, cl, br and i.