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1) Calculate the wavelength (in nm) of the red light emitted by a barcode scanner that has a frequency of 4.62 x 10^14 s^-1. a) 649nm b) 710nm c) 6.49 x 10^-7nm 2) What is the frequency of a wave with wavelength of 6.9 x 10^-13 m? a) 2.39 x 10^20 s^-1 b) 4.56 x 10^20 s^-1 c) 4.35 x 10^20 s^-1 3) What is the energy of an ultraviolet photon having a wavelength of 1.18 x 10^-8m? a) 2.54 x 10^16 s^-1 b) 1.68 x 10^-17 J c) 3.12 x 10^20 J 4) A photon has an energy of 1.1 x 10^-13 J. What is the photon’s wavelength? a) 1.66 x 10^20 s^-1 b) 1.81 x 10^-12 m c) 3.62 x 10^-15 m 5) A photon has an energy of 2.93 x 10^-25 J. What is its frequency? a) 4.42 x 10^8 s^-1 b) 2.89 x 10^8 s^-1 c) 3.96 x 10^8 s^-1 6) Red light has a wavelength of 620 nm. What is the frequency of that light? a) 4.84 x 10^14 s^-1 b) 6 x 10^-7 s^-1 c) 4.84 x 10^-4 s^-1 7) What is the energy of one photon of red light?  a) 3.206 x 10^-19 J/photon b) 5.051 x 10^-16 J/photon c) 4.196 x 10^-19 J/photon 8) What is the energy of 1 mol photons of red light? a) 1.93 x 10^5 J/mol b) 4.91 x 10^5 J/mol c) 7.47 x 10^5 J/mol

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