ࡱ> bda PSbjbjWW .v55ttttt<<"rxxxxxSSS!!!!!!!$M$&!tSSSSS!ttxx"GGGStxtx!GS!GGV@ x@4 !"0"& x'' 't SSGSSSSS!!SSS"SSSS'SSSSSSSSS :: Chemistry Worksheet Wavelength, frequency, & energy of electromagnetic waves. Show ALL equations, work, units, and significant figures in performing the following calculations. Identify the type of radiation in each problem. (Use your electromagnetic spectrum) C =  E = h C = 3.00 x 108 m/s h = 6.626 2 x 10-34 J-s (or J/Hz) 1 eV = 1.602 x 10-19 J 1. What is the wavelength of a wave having a frequency of 3.76 x 1014 s-1? 2. What is the frequency of a 6.9 x 10-13 m wave? 3. What is the wavelength of a 2.99 Hz wave? 4. What is the wavelength of a 1.28 x 1017 Hz wave? 5. What is the frequency of a 7.43 x 10-5 m wave? 6. What is the frequency of a 2,600 cm wave? 7. What is the wavelength of a 4.34 x 1015 /s wave? 8. What is the frequency of a 2, 110  wave? 9. What is the frequency of a 5.6 x 1010 m wave? 10. What is the wavelength of 109.6 MHz wave? 11. What is the energy of a 7.66 x 1014 Hz wave? 12. What is the frequency of a wave carrying 8.35 x 10-18 J of energy? 13. What is the frequency of a 1.78 x 10-15 J wave? 14. What is the energy of a 3.12 x 1018 s-1 wave? 15. What is the frequency of a 1.31 x 10-22 J wave? What is its wavelength? 16. What is the wavelength of a 7.65 x 10-17 J wave? 17. What is the energy of a 3,990  wave? 18. What is the energy of a 9,330 cm wave? 19. What is the wavelength of a 1.32 x 10-6 eV wave? 20. What is the energy in electron-volts (eV) of a 4.22 m wave? 21. What is the wavelength of a 1.528 x 10-13 J wave? Chemistry Worksheet  Wavelength, frequency, & energy of electromagnetic waves. ANSWER KEY Show ALL equations, work, units, and significant figures in performing the following calculations. Identify the type of radiation in each problem. (Use your electromagnetic spectrum) C =  E = h C = 3.00 x 108 m/s h = 6.626 2 x 10-34 J-s (or J/Hz) eV = 1.602 x 10-19 J What is the wavelength of a wave having a frequency of 3.76 x 1014 s-1?  = c/ = 3.00 x 108 m/s = 3.00 x 108 m x s = 7.98 x 10-7 m 3.76 x 1014 s-1 s 3.76 x 1014 What is the frequency of a 6.9 x 10-13 m wave?  = c/ = 3.00 x 108 m/s = 3.00 x 108 m x 1 = 4.35 x 1020 s-1 6.9 x 10-13 m s 6.9 x 10-13 m 3. What is the wavelength of a 2.99 Hz wave?  = c/ = 3.00 x 108 m/s x 1 Hz = 3.00 x 108 m x s = 1.00 x 108 m 2.99 Hz s-1 s 2.99 4. What is the wavelength of a 1.28 x 1017 Hz wave?  = c/ = 3.00 x 108 m/s = 1 Hz x 3.00 x 108 m x s________ 1.28 x 1017 Hz s-1 s 1.28 x 1017 = 2.34 x 10-9 m 5. What is the frequency of a 7.43 x 10-5 m wave? 6. What is the frequency of a 2,600 cm wave? 7. What is the wavelength of a 4.34 x 1015 /s wave? 8. What is the frequency of a 2, 110  wave?  = c/ = 3.00 x 108 m/s = 3.00 x 108 m x 1 x 1  = 1.42 x 1015 s-1 2, 110  s 2, 110  10-10 m 9. What is the frequency of a 5.6 x 1010 m wave?  = c/ = 3.00 x 108 m/s = 3.00 x 108 m x 1 x 1 m = 5.4 x 103 s- 5.6 x 1010 m s 5.6 x 1010 m 10-6 m 10. What is the wavelength of 109.6 MHz wave? 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B H ^ ` h j n 豩㩟yql h5h,5>*H*hvMh,5h,h_K[h_K[h_K[H* h_K[h_K[ h,h,ht% ht% 57ht% ht% 5ht% h,5 h,5H* ht% 5H*ht% ht% 57>*ht% ht% 5>* ht% 5>* ht% 5 h,5 h,5>*hvMh,57>**n !! !:!R!n!r!t!x!!!!!!!!!!:::2:4:>:Ỵᙑ{yqh_K[h,5Uh,h_K[ h_K[h_K[ h,h,hh,5h%h57 h5H*h%h,5H* h%5H* h%5h%h57>*hh5>* h5>* h,5 h5hvMh,57>*h,5>*H* h,5>*,!!:F;H;\;^;;;R<T<<<^=====n>>>>?j?l??`gd)gd)gd}gd gd,gd_K[ = c/ = 3.00 x 108 m/s = 3.00 x 108 m x 1 x 1MHz x 1 Hz = 109.6 MHz s 109.6 MHz 10+6 Hz s-1 = 2.74 m 11. What is the energy of a 7.66 x 1014 Hz wave? E = h  = 6.626 2 x 10-34 J/Hz x 7.66 x 1014 Hz = 5.07 x 10-19 J 12. What is the frequency of a wave carrying 8.35 x 10-18 J of energy?  = E / h = 8.35 x 10-18 J = 1.26 x 1016 s-1 6.626 2 x 10-34J-s 13. What is the frequency of a 1.78 x 10-15 J wave?  = E / h = 1.78 x 10-15 J = 2.69 x 1018 s-1 6.626 2 x 10-34J-s 14. What is the energy of a 3.12 x 1018 s-1 wave? E = h  = 6.626 2 x 10-34 J-s x 3.12 x 1018 s- = 2.07 x 10-15 J 15. What is the frequency of a 1.31 x 10-22 J wave? What is its wavelength?  = E / h = 1.31 x 10-22 J = 1.977 000 392 x 1011 s-1 = 1.98 x 10+11 s-1 6.626 2 x 10-34J-s  = c/ = 3.00 x 108 m/s 1.977 000 392 x 1011 s-1 = 3.00 x 108 m x s = 0.001 52 m = 1.52 x 10-3 m s 1.977 000 392 x 1011 16. What is the wavelength of a 7.65 x 10-17 J wave?  = E / h = 7.65 x 10-17 J = 1.154 507 863 x 1017 s-1 6.626 2 x 10-34J-s  = c/ = 3.00 x 108 m/s = 1.154 507 863 x 1017 s-1 = 3.00 x 108 m x s = 0.001 52 m = 1.52 x 10-3 m s 1.154 507 863 x 1017 17. What is the energy of a 3,990  wave?  = c/ = 3.00 x 108 m/s = 3.00 x 108 m x 1 x 1 = 3,990 s 3,990 10-10 m = 7.51 879 699 2 x 1013 s- E = h  = 6.626 2 x 10-34 J-s x 7.51 879 699 2 x 1013 s- = 4.98 x 10-19 J 18. What is the energy of a 9,330 cm wave?  = c/ = 3.00 x 108 m/s = 3.00 x 108 m x 1 x 1 cm = 3.215 434 084 x 106 s-1 9,330 cm s 9,330 cm 10-2 m E = h  = 6.626 2 x 10-34 J-s x 3.215 434 084 x 106 s-1 = 2.13 x 10-27 J 19. What is the wavelength of a 1.32 x 10-6 eV wave?  = E / h = 1.32 x 10-6 eV x 1.602 x 10-19 J = 3.191 331 38 x 10+8 s-1 6.626 2 x 10-34J-s 1 eV  = c/ = 3.00 x 108 m/s = 3.00 x 108 m x 1 3.191 331 38 x 10+8 s-1 s 3.191 331 38 x 10+8 s-1 = 0.940 m 20. What is the energy in electron-volts (eV) of a 4.22 m wave?  = c/ = 3.00 x 108 m/s = 3.00 x 108 m x 1 x 1 m 4.22 m s 4.22 m 10-6 m = 7.109 004 73 x 1013 s- E = h  = 6.626 2 x 10-34 J-s x = 7.109 004 73 x 1013 s- = 4.71 x 10-20 J 21. 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