Question

Calculate the energy of one mole of photon of radiation whose frequency is 4 X10 Hz.

Answer 1

$\huge{\mathfrak{\underline{\purple{Answer}}}}$

Energy of 1 photon :

$energy = frequency \times planks \: constant \\ energy = 4 \times 10 \times 6.626 \times 10 {}^{ - 34} \\ energy = 26.504 \times 10 {}^{ - 33}$

The energy of 1 mole of photons :

1 mole = 6.022x10^23

$= 26.504 \times 10 {}^{ - 33} \times 6.022 \times 10 {}^{23} \\ = 160\times 10 {}^{ - 10} joules$