Question

and this one, please

1 1 The wavelength of the four Balmer series lines for hydrogen are found to be 410.4, 434.3, 485.9, and 656.5 nm. What average percentage difference is found between these wavelength numbers and those predicted by = R )? It is amazing how well a simple formula (disconnected originally from theory) could duplicate this ng phenomenon. % + Additional Materials Reading 4. [-13 Points] DETAILS OSCOLPHYS2016 30.4.P.027. MY NOTES ASK YOUR TEACHER PRACTICE ANOTI An X-ray tube has an applied voltage of 140 kV. (a) What is the most energetic x-ray photon it can produce? Express your answer in electron volts and joules. descriptive text 1 eV descriptive text 2 با (b) Find the wavelength of such an x ray in m. m Additional Materials Reading

Answer 1

Page + Given werelengths ane 410.4, 434.3 485.9, 6565 nm for Balne Atso n, 2 AER ( 2 ) kor balner IER (7-6) - RECO R: 1.09734100ml die 36770 + & 6+ = 4/6) = 16 3R = 6.562x107 m sxl.0693 = 656.2 nm 3R 16 16X100 486 um 3x1.0913 21R usta 25 10oX 107 - 433.9 mm 2161.0973 R 65 day ZIR - - R 14 4 du 960-? 2R - 410.9 nm 2x10972 656.5-656.2 of coff. for da x 100 = 0.044. 65.2 656.2 486.9-48€ 6.5 fonda 100048 %. 466 486 forza 484.3-432-9 +100: 0.4 xloo 0.097 433.9 433.9 410.9-410.4 0.5 for dy 012 410.9 40.5 0.04 + 0.18+ 0.09+0.12 Average t. differen aa 4 X 4.00 -

12375 As we know that amin = 12375 Thorios 4° Man energy admin. = 0.088 A = 8.8810-12 m he 6.6211023x10² 0.088 x 1010 79.86 thin x 10-16 0.088 198.6 X 10-14 1= 2.25 X 104 g Tev= 1.6x10-197 1 er 1.681019 2.2 57 10-14 1.6 X 10-19 ex alunos en * To pump above metastable state, Chergy of 2.1 eris sequined which corresponds to 6.ttrto- 33X76 2.1x1.tx1019 19.86 5.91810? 3.36 * d = 591mm 6.628 1024 X 3x lot 1.17 X1.6710-19 La 1.2 Hoevim 21.06 lim