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Microwave radiation of wavelength 4.00 mm is used to heat 250.0 grams of water from 10.6 degrees C to 100.0 degrees C. How many photons are needed?

a) Calculate the total heat energy in joules needed to warm the water. (Specific heat of water is 4.18 J/(g*deg.C))

b) Find the energy provided by a single photon with wavelength 4 mm. (Planck's constant (h) is 6.626*10^-34 J-sec)

c) Calcualte the total number of photons required to provide the needed energy.

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  • Category:- Chemistry
  • Reference No.:- M9461878

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