Why do we slant the graduated cylinder before dropping the metal cylinder into it?

In salt water solution,the salt is the blank

A5.00 g of a in . g of at aa 5.00 g of b in . g of .?at .

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.