Solubility of ionic compounds depends on

Asubstance is a good conductor of electricity which of the following best explains a probable position of the substance in a periodic table

Calculate the energy required to ionize a hydrogen atom to an excited state where the electron is initially in the n = 5 energy level. report your answer in kilojoules

How many moles of no2 will form when 3.3 moles of cu are reacted with excess hno3?