The Lyman series results from transitions of the electron in hydrogen in which the electron ends at the n=1 energy level. Using the Rydberg formula for the Lyman series, calculate the wavelength 2→1 of the photon emitted in the transition from the n=2 energy state. Give an answer in units of nanometers (nm).

About 3% of the water on earth is freshest. only about 40% of that freshwater is available for human use. why is so much freshwater unavailable for human use?

Which three statements represent the benefits of performing experiments using computer simulations?

You are attempting to recrystallize a crude product mixture. you add the appropriate amount of hot solvent and are allowing the solution to slowly cool to room temperature. however, at room temperature no crystals have appeared, which of the following methods should be used to induce crystallization? choose all correct answers. a) place the flask in an ice bath. b) swirl the contents of the flask. c) add a small seed crystal of the desired product. d) scratch the inside of the glassware using a stir rod. it can be multiple choices