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Calculate energy in terms of blue light ...

Calculate energy in terms of blue light of wavelength 450 nm.

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Energy of Avogadro.s number of quanta, Einstein `=(N_(A)hc)/(lamda)`
`=(6.022xx10^(23)" mol"^(-1) xx 6.626xx10^(-34) Js xx 3.0xx10^(8)ms^(-1))/(450xx10^(-9)m) =2.66xx10^(5) J`
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