In this experiment it takes about 6 microliters of solution
toproduce a spot 8mm in diameter. if the cu(no) solution
containsabout 6g cu^2+ per liter how many micrograms of cu^2+ ion
are therein one spot?

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.