Explain how atoms emit photons when excited electrons fall to lower energy levels, relate colour, wavelength, frequency and energy across the electromagnetic spectrum, and distinguish a continuous spectrum from a line spectrum.
Portions of the rinse water were then titrated with the standardized EDTA solution in the presence of murexide as indicator. The burette readings are given in the table. Trial 1 Trial 2 Trial 3 Trial 4 Final burette reading / cm3 (± 0.05…