What is the de Broglie wavelength, in nanometers, associated with an electron that is moving with a velocity of 5.97 x 106 m/s? (The mass of an electron is 9.11 x 10-28 g.) The MRI (magnetic resonance imaging) body scanners used in hospitals operate with 400 MHz radiofrequency energy. How much energy does this correspond to in kilojoules per mole? A) 2.65 x 10 -28 kJ/mol b) 4.40 kJ/mol c) 4.40 x 10 -3 kJ/mol d) 1.60 x 10 -7 kJ/mol e) 1.60 x 10 -4 kJ/mol The greater the energy of a photon, the a) longer the wavelength and the higher the frequency b) longer the wavelength and the lower the frequency c) shorter the wavelength and the higher the frequency d) shorter the wavelength and the lower the frequency Excited rubidium atoms emit red light with a wavelength of 795 nm. What is the energy, in kilojoules per mole, of this electromagnetic radiation? A) 150 kJ/mol b) 4.15 kJ/mol c) 27.8 kJ/mol d) 72.1 kJ/mol e) 14.2 kJ/mol What wavelength of light is emitted by a hydrogen atom when
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