1.

1 mole of photons, each of frequency 250 s^(-1) would have approximately a total energy of

Answer»

1 ERG
1 joule
1 eV
1 MeV

Solution :`E = N_(A) HV = (6.02 xx 10^(23)) (6.6 xx 10^(-34) Js) (250 s^(-1)) = 10^(-7) "erg " = 1J`


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