1.

Calculate the energy of one mole of photons of radiations whose frequency is 3 xx 10^(12) Hz

Answer»

Solution :`E=h upsilon=6.625xx10^(-34)" JS "xx3xx10^(12)s^(-1)`
`=1.9875xx10^(-21)"J for one photon "`
`"ENERGY of one MOLE of photons is"`
`="Energy of one photon"XX"AVOGADRO number "`
`=1.9875xx10^(-21)Jxx6.023xx10^(23)`
`=1.1970xx10^(3)" J mol"^(-1)`


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