The first ionization energy, E , of a nitrogen atom is 2.32 aJ. What is the wavelength of light, in nanometers, that is just sufficient to ionize a nitrogen atom? Values for constants can be found in the Chempendix.

Which formula can be used to calculate the molar mass of hydrogen peroxide

Explain what happens at the saturation point when adding salt to water at room temperature.

Oil rich countries in the middle east cover about 4% of earths total land area but prossess about 48% of the worlds known oil reserves what is the main reason for high concentration of reserves in this part of the world