profile-img
Anjali Asked a Question
September 3, 2020 6:28 pmpts 30 pts
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
  • 2 Answer(s)
  • 0 Likes
  • 3 Comments
  • Shares
  • Priyanshu kumar Best Answer
    see this
    • cropped5714752758375771082.jpg
    Likes(1) Reply(2)
    Priyanshu kumar
    just conversion takes place here in joule to calorie
  • Priyanshu kumar thankyou
    yes what's your doubt in this
    Likes(1) Reply(4)
    Anjali
    i m not able to understand this solution.... in last energy of one mole of photons in kilocalorie
  • Anjali
    thank u sir........
    Likes(1) Reply(1)
    Priyanshu kumar
    you're welcome😊