What is the energy in joules of a mole of photons associated with visible light of wavelength 486 nm?

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What is the energy in joules of a mole of photons associated with visible light of wavelength 486 nm?

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Answer 1 · 2014-07-12T07:58:30

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$h = 6.626$ $h=6.626$ x $10^{- 34} J . s$ $10^(-34) J.s$
$c = 3$ $c=3$ x $10^{8}$ $10^8$ $m s^{- 1}$ $ms^-1$
$λ=486$ x $10^-9$ $m$
1 mol photons = $6.023$ x $10^23$ photon

Energy of one photon ( $E$ ) = ( $6.626$ x $10^(-34) J.s$ x $3$ x $10^8$ $ms^-1$ )/( $486$ x $10^-9$ $m$ )

Energy of one mole photon ( $E$ ) = ( $6.023$ x $10^23$ x $6.626$ x $10^(-34) J.s$ x $3$ x $10^8$ $ms^-1$ )/( $486$ x $10^-9$ $m$ )

Energy of one mole photon ( $E$ ) = $2.46$ x $10^5$ $J$

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What is the energy in joules of a mole of photons associated with visible light of wavelength 486 nm?

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