Question

Question 2 of 6 > Determine the frequency and energy for light with a wavelength of 724.1 nm. kJ/mol What is the color of light with a wavelength of 724.1 nm? Refer to the electromagnetic spectrum as needed. Determine the wavelength and energy for light with a frequency of 5.971 x 10s. kJ/mol

Answer 1

The relation betrenergy and frequency is givenby E = m E energy de frequency h - Plankts Comtont t = 6.626 X 10 -34 7.5 O ch velocity of light - 3x108 mg 1. n t Wavelength of light. Now & C E

From the elelectromagnetic spectra, Colors Ware length form) Violet 380-450 Blue 450 - 485 985-500 500-565 cyan Green Yellow Orange Red 565-590 590-625 625-740

721.10 =724-1x109am For the hare length 9 7 21.1 nm E = he 6.626 x 10-34 x 3x108 724-1 x 10-9 = 2.745x10-9 J 3x108 ( - 4.143 x 10 14 37 – 4. 143 * 104 Hz According to electromagnete Spectrum the.colonxs nearty with warelength 72 4-1 sm is nearly la red. K dowed The mit of frequency is got some time colled Hz tot 1st - 1 Hz cao | 1 2 CUNG HỌC le Solo 104C

For the frequency 5.971x1019 5t, E- to E = (6.626 X10-34 x 5.372 x 10 11 ) I = 3.95 x 10-15 T : E=3.35 x 10-19 T nows da a= 8 green. 3x108 mit 5.971 x 1844 51 582.4 x 10-9m = 502-4nm id=502.4 nm. in According to electromagnetic spectrum the colors of I the light with the wavelength 502.4 is nearly For the yellow light with hare length 590.1mm, 590.1 mm E = ne 2550. 1x 109 m - 6-626x10 34 x 3 x 1087 550. 1 X 16-9 I = 3.368 x 10-19 T E =3.368*10-19 J i - 3x108 mst - 590.1X10-9 m - 5.083 41814 54 - 5.08381614 HZ frequency -

H 271 For the light with energy 249.2 kJ/mol, E = 243.2x103 T For the light with energy 245.2 K7 /mol. for 1 mole = 6.083x102 number of photons, i for 6.023 x 16 23 photon the energy 219.2 x 103 J for 1 299.2 x 103 6-023 x 1023 = 4-137x10-19T - Energy of the one particle of light in 4.137x 1819 J E=bo 1.1 =6-626X10-34 Jos = 6.244 x 1024 H7 :D=6.249x10745-7 9.137 x 10-19 T 3x108 msrt 6.214 x 1819 gt = 480.4 x 10-9 m = 480.4 mm id=480, 4nm. :. According to the electromagnetic sprection the Colour of the light with wore length 180.nomis nearly blue.