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Calculate the wavelength, in nm, of the radiation emitted as the electron in a hydrogen atom moves from the n=5 to the n=2 level.? How can I find out, what people do for a living, per city?
Not just labor statistics, but what people do for a living per city/area.? What is the normal size of a spleen in a 3 year old boy? When the volume of a gas is changed from - m3 to 15.5 m3 the temperature will change from 159 K to 456 K? Two parallel lines are intersected by a transversal. Prove: Angle bisectors of alternate interior angles are parallel?