An electron moves from the 4th energy level to the 2nd energy level in a hydrogen atom. The wavelength of the photon emitted is 486 nm. What is the energy, in Joules, of this photon? (Report your answer in scientific notation. Round the coefficient to 2 significant figures.)

Answer(28.02g/mol);

Polyethylene is a strong synthetic polymer that can be used to make toys and bottles. polyethylene is a plastic material called thermoplastic. one very useful property of thermoplastic is that when it is heated it turns into liquid, which can be molded into desired shape and size. also the material do not dissolve at room temperature.