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Homework 4 (Chapter 7)

# Homework 4 (Chapter 7) - Michael Yagudayev 106180606 11-1...

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Michael Yagudayev 106180606 CHE 131 R01 HW 4 Chapter 7 14. Assume frequency = 1.00 × 10 11 s -1 . (a) = = . × / . × = . × - λ 2 998 108m s1 00 1011Hz 3 00 10 3m (b) = = . × - . × = . × - / E 6 626 10 34Js∙1 00 1011Hz 6 63 10 23 J photon 16. (d) FM station broadcasting 89.1 MHz; (c) Microwaves; (a) Green light; (b) X-rays 18. = = . × / = . × v 2 998 108m s495nm 6 06 1014Hz 20. = = . × / = . × v 2 998 108m s450nm 6 66 1014Hz 32. E min = 3.69 × 10 -19 J; = = . × - . × × - Ephotons hcλ 6 626 10 34 Js2 998 108ms600 10 9 = . × - m 3 31 10 19 The metal will not cause the photoelectric effect. 38. (a) n = 1 to n = 3 absorption (b) n = 5 to n = 1 emission (c) n = 2 to n = 4 absorption (d) n = 4 to n = 4 emission 40. Hydrogen; n = 1 to n = 4; λ = 97.3 nm. Which of these requires a wavelength longer than this? (a) n = 2 to n =4 486.1 nm (b) n = 1 to n = 3 102.6 nm (c) n = 1 to n = 5 95.0 nm (d) n = 3 to n = 5 1282.0 nm a, c, and d 42. He + ; calculate energy emitted from n = 5 to n = 3 state using =- . × - En Z2n22 179 10 18 J where Z is the positive charge of the nucleus and n is principal quantum number. In what part of the electromagnetic spectrum does this radiation lie?

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Homework 4 (Chapter 7) - Michael Yagudayev 106180606 11-1...

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