The rays of the Sun that cause tanning and burning are in the ultraviolet portion of the electromagnetic spectrum. These rays are categorized by wavelength: UV-A radiation has wavelengths in the range of 320–380 nm, whereas UV-B radiation has wavelengths in the range of 290-320 nm.  Calculate the energy of one quantum of light with a wavelength of 290 nm and the energy of a quantum with a wavelength of 360 nm. (Hint first convert wavelength to frequency). Which have greater energy, UV-A radiation or UV-B?   Does the amount of energy for each seem small? Why

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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  1. The rays of the Sun that cause tanning and burning are in the ultraviolet portion of the electromagnetic spectrum. These rays are categorized by wavelength: UV-A radiation has wavelengths in the range of 320–380 nm, whereas UV-B radiation has wavelengths in the range of 290-320 nm. 
  1. Calculate the energy of one quantum of light with a wavelength of 290 nm and the energy of a quantum with a wavelength of 360 nm. (Hint first convert wavelength to frequency).




  1. Which have greater energy, UV-A radiation or UV-B?

 

  1. Does the amount of energy for each seem small? Why?

 

  1. A typical indoor tanning bed uses 97% UVA and 3% UVB. If the lights used only produced UV radiation would you feel hot while you were tanning?
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