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calculate energy of one mole of photons ...

calculate energy of one mole of photons of radiation whose frequency is `5xx10^(14) hz`

Text Solution

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Frequency ,
`v = 5 xx 10^(14) s^(-1)`
Energy of 1 photon,
`E = hv`
`h = 6.626 xx 10^(-34) J s`
`:. E = (6.626 xx 10^(-34) J s) xx (5 xx 10^(14) s^(-1))`
`= 3.313 xx 10^(-19) J`
Energy of 1 mol of photons
`=3.313 xx 10^(-19( xx 6.022 xx 10^(23)`
`= 199.51 xx 10^3 J mol^(-1)`
or ` = 199.51 kJ mol^(-1)`
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