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Anjali posted an Question
September 03, 2020 • 23:58 pm 30 points
  • IIT JAM
  • Chemistry (CY)

Calculate the energy in kilocalorie per mole of the photons of an emr of wavelength 7600 ex. sol. = 7600 À 7600x 103 cm c = 3 x 1010 cm s- frequency 3x10 cms 76

Calculate the energy in kilocalorie per mole of the photons of an EMR of wavelength 7600 Ex. Sol. = 7600 À 7600x 103 cm C = 3 x 1010 cm s- Frequency 3x10 cms 7600x10 10 cm = 3.947x 1014 s1 E = hv = 6.6x 10-2erg s x 3.947 x 1014s = 2.6 x 10-12 erg. v = Energy of one mole of photons = 2.6 x 10-12 erg x 6.02 x 103 mol = 15.7x 101 erg mol 15.7x 104 J mo = 157 KJ mol Energy of one mole of photons in kilocalorie 157 KJmol 4.185 Jcal = = 37.53 kcal mo-1

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    Priyanshu kumar best-answer

    yes what's your doubt in this

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    i m not able to understand this solution.... in last energy of one mole of photons in kilocalorie

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    see 1cal=4.184 joule

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    so here conversion takes place

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    got this??

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