The first ionization energy, E , of a helium atom is 3.94 aJ. What is the wavelength of light, in nanometers, that is just sufficient to ionize a helium atom? Values for constants can be found in the Chempendix.

In numbering carbon atoms in the parent chain of a hydrocarbon, why would you number from right to left, rather than left to right

What is the mass defect of a mole of nuclei with 1.8 x 10^15 j/mol binding energy?

The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.