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Chem110MT1SolutionsFall2010

Chem110MT1SolutionsFall2010 - ©Prep101 Chem110 MT1...

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©Prep101 Chem110 MT1 Instructor Solutions will be posted at www.prep101.com/solutions 15 7.0 x 10 -5 6.0 x 10 -5 5.0 x 10 -5 4.0 x 10 -5 cm Chapter 8 Questions: Q 1.1 Consider the following approximate visible light spectrum: Barium emits light in the visible region of the spectrum. If each photon of light emitted from barium has an energy of 3.90 x 10 -19 J, what colour of visible light is emitted? Solution λ c E h = : E c λ h = ( )( ) J 10 x 3.90 ms 10 x 2.998 Js 10 x 6.626 λ 19 - 1 8 -34 = m 10 x 5.09 λ -7 = cm 10 x 5.09 λ -5 = λ = 509 nm Therefore, GREEN light will be emitted Infrared Red Orange Yellow Green Blue Violet Ultraviolet
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