Concept Explorations Chapter 7

ANSWERS TO CONCEPT EXPLORATIONS 7230. a0. Red light has a greater wavelength than gloomy light. b0. The frequency of blue light is greater than that of blushful light. C0. The mental reservation of blue light is greater than that of inflamed light. d0. No, the speed of rubicundness light and the speed of blue light argon the same, the unadulterated speed of light. e0. The nada of triplet photons of blue light is ternion times the faculty of ane photon of blue light. To comp are the ii energies, first note that the talent of n photons of light is E = nh . Also, since = c/ , the muscle can be written as E = nhc/ . Now find the ratio as follows. Eblue Ered nblue hc nblue red (2)(704 nm) blue = = = = 1.040 = 1.04 nred hc nred blue (3)(451 nm) red Thus, the energy of two photons delay to a wavelength of 451 nm (blue light) is 1.04 times the energy of three photons symmetric to a wavelength of 704 nm (red light). f0. The frequency and energy of the light ar e c 3.00 x 108 m/s = = = 2.459 x 1014/s -6 1.22 x 10 m E = h = (6.63 x 1034 Js)(2.459 x 1014/s) = 1.630 x 1019 J Now use the bear formula to determine the energy for a transition from n = 1 to n = 2, which is the minimum energy required for a transition to occur. 1 1 1 1 E = RH 2 - 2 = (2.179 x 1018J) 2 - 2 = 1.6345 x 1018 J.

nf ni 1 2 Since the available energy is less than the minimum energy required, no transition occurs. g0. bingle mole of hydrogen atoms would require a minimum of atomic number 53 mole of photons. First, use the appropriate formula to calculate the energy required for the transition. 1 1 1 1 E = RH 2 - 2 = (2.179 x 1018J) 2 - 2 = 1.9368 x 1018 J. nf ni 1 3 The wav elength of the light is E 1.9368 x 10-18 J =! = 2.921 x 1015/s h 6.63 x 10-34 J s c 3.00 x 108 m/s = = 1.026 x 107 m = 1.03 x 107 m (103 nm) 2.921 x 1015 /s = = 7240. a0. The ground-state energy levels of X and H are the same. b0. The energy of an negatron in H would be lower (more negative) because 1/n3 is shrimpy than 1/n2. C c0. The spacing of the energy...If you want to get a full essay, order it on our website: OrderEssay.net

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