which item requires the least energy to increase its temperature? the items are the towel, the sand, or the water
1 answer:
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1 mole of photons contain 
photons (Avogadro number). This means that 3.0 moles of photons contain
photons.
The wavelength of the light in the problem is
, so the frequency is
The energy carried by a single photon is
where
is the Planck constant, while f is the frequency. Since this is the energy carried by a single photon, the energy carried by 3.0 moles of photons will be the energy of the single photon multiplied by the total number of photons:
which corresponds to E=536 kJ.
The wavelength of the light in the problem is
The energy carried by a single photon is
where
which corresponds to E=536 kJ.
