a student prepared a 0.10 M solution of acetic acid, CH3COOH. acetic acid has a Ka of 1.75 * 10^-5. what are the hydronium ion concentration and the pH of the solution?
[hydronium ion] =
pH =
what is the wavelength of a photon emitted when a hydrogen electron drops from the n = 6 to the n = 3 level?
(E1 = -13.6 eV and Planck's constant is 6.626 * 10^-34 J s)